- Fire rated glass doors combine fire resistance with transparency, supporting both safety and architectural design in modern buildings.
- These assemblies include rated glass, frames, and hardware tested together to meet stringent fire, smoke, and thermal standards.
- Incorrect specification or installation can lead to life safety risks, failed inspections, and legal liability under evolving fire codes.
As a professional deeply immersed in architectural and fire safety systems, Iโve encountered a growing demand for solutions that balance code compliance with design excellence. Fire rated glass doors have emerged as one of the most critical elements in modern fire protection strategies, especially as the industry shifts toward transparency, visual connectivity, and performance-driven design. These doors are not only functional components in life safety systems, but also play a significant architectural role in many commercial and institutional settings. Their presence allows design teams to create open, light-filled environments without compromising the critical need for fire resistance. As expectations evolve, so do the applications of fire rated glass doors, with increased use in spaces where visual access, safety, and compliance must coexist.
Fire rated glass doors are far more than a niche glazing product. Their correct application and specification are essential to meet fire-resistance requirements while preserving light transmission, visibility, and design intent. Understanding their construction, performance criteria, code requirements, and integration into door assemblies is vital for any architect, specifier, or code consultant working on projects where passive fire protection is a priority. These doors must perform predictably in the event of fire, and improper selection or installation could lead to failure of compartmentation or even legal liability. The increasing complexity of fire and life safety codes only adds to the importance of getting these systems right the first time.
In this article, I will provide a comprehensive guide to fire rated glass doors, written from the perspective of a professional for fellow experts. My goal is to bridge the gap between fire testing protocols, code language, material science, and real-world applications. You will find technical explanations paired with practical recommendations based on industry experience. This is not a general overview, but a detailed, performance-focused discussion aimed at decision-makers and practitioners who influence product selection, compliance, and installation in their daily work. By the end, you should have a deeper understanding of how to specify, select, and manage these critical life safety systems.
Fundamentals of Fire Rated Glass Doors
What Are Fire Rated Glass Doors?
A fire rated glass door is a building component designed to prevent the spread of fire and smoke between compartments for a specified time period while maintaining visibility and architectural intent. These doors are tested as complete assemblies, meaning the frame, hardware, glazing, and seals all contribute to the final fire rating. The term encompasses not only the fire-rated glass itself but also the supporting frame and hardware system. The inclusion of transparent materials does not lessen the performance demands placed on these assemblies. Every component must work in unison to achieve the required protection, and the glass alone is never enough to provide code compliance without a certified assembly.
What distinguishes fire rated glass doors from traditional fire doors is their transparent core. They allow vision across fire compartments without compromising safety. The glazing materials used are specifically engineered to endure intense heat and, depending on type, can either block radiant heat (fire-resistive) or merely contain flames and smoke (fire-protective). In this sense, they serve both as fire barriers and as architectural elements. Their ability to maintain visual access during fire conditions can enhance occupant evacuation, first responder navigation, and overall building safety under duress.
These doors are particularly important in corridors, stair enclosures, exit pathways, and lobbies, where compartmentation is critical for safe evacuation and first responder access. Their design and performance characteristics need to be understood holistically to ensure proper selection and installation. A misstep in choosing the correct rating or component can result in code violations or worse, failure during an actual fire. Understanding the terminology and testing standards is essential to avoid such risks. The benefits of transparency must never come at the expense of safety, and only assemblies that meet all criteria should be considered.
Purpose and Use-Cases
Fire rated glass doors serve both a life safety and architectural function. In the event of a fire, they act as barriers to the spread of heat, flames, and smoke, preserving the integrity of fire-rated walls and assemblies. Simultaneously, they provide transparency and visibility, which is especially important in high-traffic or security-sensitive areas like hospitals, educational institutions, and commercial buildings. They are also instrumental in assisting emergency personnel by allowing visual assessment of conditions on the other side of the door. This visibility enhances safety during evacuations and fire response, enabling quicker decision-making in critical moments.
In commercial fire rated glass doors, this dual functionality is often required by code. For example, hospital corridors require visibility into patient rooms while maintaining a 45-minute or 60-minute fire rating. In high-rise office buildings, rated doors with full-lite glazing allow designers to preserve natural light across compartments without sacrificing code compliance. These doors can contribute to better occupant wellbeing by reducing visual isolation and supporting daylighting strategies. In addition to aesthetics, there are psychological and operational benefits to using transparent fire-rated systems, especially in environments that benefit from openness and visibility.
This use-case versatility is one of the reasons fire rated glass doors are increasingly replacing opaque fire doors, especially where aesthetics and spatial continuity matter as much as safety. Their compatibility with modern architectural trends makes them an essential tool for designers. However, understanding their limitations is just as important as understanding their benefits. Proper application requires coordination between the design team, code officials, and product manufacturers. Only then can these systems be used to their fullest potential without compromising life safety.
Fire Rating Categories Explained
Fire ratings indicate how long a door assembly can withstand a standard fire exposure in laboratory conditions. Ratings are generally given in 20-minute increments, with the most common being 20, 45, 60, 90, and 120 minutes. The fire rating required for a door depends on its location in the building, the type of wall it is installed in, and its function within the egress path. Ratings are determined by third-party testing labs and are based on well-established procedures defined by codes and standards. This consistency allows for predictable performance across different projects and applications and ensures life safety systems behave reliably in a fire event.
The F-Rating refers to the duration the assembly resists flame penetration. The T-Rating, which is less commonly used in door specifications but critical for wall penetrations, measures the amount of heat transmitted through the assembly. In some cases, doors must also meet criteria for temperature rise such as not exceeding 250ยฐF on the unexposed surface after 30 minutes which is especially important for stair enclosures. These different types of ratings are not interchangeable, and specifiers must be careful to understand what each one means. Choosing the wrong rating could result in a dangerous underperformance during a fire, compromising both egress and structural protection.
Understanding how each rating applies in real-world situations is a key part of the specification process. Misinterpreting a rating or applying it incorrectly can lead to failed inspections or performance issues. Itโs critical to consult with manufacturers and testing agencies when unusual or complex conditions are involved. Even within the same fire rating category, variations in glass type, frame design, and hardware can significantly affect performance. That is why all components must be verified as part of a listed assembly and documented thoroughly during the design and approval stages.
Types and Classifications of Fire Rated Glass Doors
By Fire Resistance Level
Fire rated glass doors fall into two main performance categories: fire-protective and fire-resistive. Fire-protective glazing, such as filmed or laminated ceramics, prevents flames and smoke from passing through but does not block significant radiant heat. These are typically used in 20 or 45-minute door assemblies and are well-suited for corridors and non-load-bearing partitions where radiant heat protection is not mandated. They are designed to compartmentalize fire and prevent the spread of hot gases and smoke but will not stop thermal radiation from transmitting through the glass. This makes them unsuitable for applications like stairwells or elevator shafts, where thermal insulation is required to protect occupants and maintain tenable conditions.
Fire-resistive glazing, on the other hand, is tested to ASTM E119 or UL 263 and can withstand the passage of flames, smoke, and radiant heat for 60 minutes or more. These systems include intumescent interlayers or multi-laminate constructions that expand during fire exposure to form a solid, opaque thermal barrier. In some cases, they can be used in wall assemblies where codes allow transparent fire-resistive barriers instead of opaque construction. Because they block radiant heat transfer, fire-resistive assemblies are considered more complete solutions for areas with strict fire and life safety requirements. Their use is essential in spaces that require compartmentation to resist both flame and heat, such as egress enclosures or vertical shafts.
Fire-protective doors can be visually identical to fire-resistive ones, so understanding the code-required performance for each opening is crucial. Specifiers and designers must consult the International Building Code or relevant jurisdictional codes to determine which type is appropriate for each application. Using the wrong category of glazing can result in noncompliance or even system failure during a fire. Aesthetically, both types can be customized to match design intent, but performance considerations should always take precedence. Balancing code requirements with architectural goals is a key responsibility of the design and engineering team.
By Frame Type
The frame material plays a major role in the structural integrity and visual quality of fire rated glass doors. Steel fire doors, built with hollow metal frames and full-lite fire rated glazing, are the most commonly used due to their strength, versatility, and ability to accommodate high fire ratings. They are available in various gauges and finishes, allowing them to be used in both back-of-house and high-end commercial applications. Their fire performance is predictable and well-documented, and they are often the go-to solution when safety is prioritized over aesthetic nuance. However, manufacturers have significantly improved design flexibility in steel systems, offering narrow profiles and powder-coated finishes that can complement most architectural styles.
Metal fire doors made of aluminum or stainless steel are typically chosen for aesthetic reasons or specific environmental conditions. Aluminum frames offer slim profiles and clean sightlines but require thermal breaks and fire-resistant inserts to achieve ratings higher than 20 minutes. In contrast, stainless steel frames provide both durability and corrosion resistance, making them ideal for laboratories, clean rooms, and coastal applications where humidity or chemicals may pose a threat to other materials. These frames can also be polished, brushed, or textured to achieve different visual effects. It is important to confirm that any frame system used with a fire rated glass door is tested and listed as part of the complete assembly.
Wood fire doors with vision panels are also available, although they are typically limited to 20 or 45 minutes and only use smaller fire-rated glazing kits. The fire-rated glass is usually installed using listed vision kits, which include metal stops and intumescent seals. These doors are generally used in interior applications where the visual warmth of wood is desired, but full-lite glazing is not necessary or code-required. It is worth noting that wood fire doors require more careful maintenance and inspection over time, as changes in humidity, wear, and improper repairs can affect their performance. As with all fire rated assemblies, labels and documentation must be preserved and verified for compliance.
By Glazing Configuration
The choice of glazing influences not just the fire rating but also light transmission, visual continuity, and thermal properties. Monolithic ceramic glass is widely used due to its high temperature tolerance and optical clarity, although it offers limited acoustic or radiant heat protection. This type of glazing is often used in fire-protective doors, such as those rated for 20 or 45 minutes, and is available in both clear and slightly tinted variations. While it performs well in fire conditions, it can allow heat to transfer through, which limits its use in areas where people may be exposed to high temperatures during an evacuation. This makes it necessary to evaluate the specific location and use of the door before choosing ceramic glass.
Intumescent laminated glazing, on the other hand, swells under heat to form an opaque barrier that blocks radiant energy and smoke. This type of glazing is typically used in fire-resistive assemblies where performance must include both flame containment and thermal insulation. These units often consist of multiple glass plies and interlayers, bonded together to form a thick, multi-functional product. They can be incorporated into full-lite doors and even large vision panels without sacrificing performance. Because of their increased thickness and complexity, they often require specially designed framing systems and higher hardware tolerances.
Some advanced systems incorporate double- or triple-glazed insulating units that combine fire-resistive layers with thermal and acoustic insulation. These are especially useful in energy-efficient commercial fire rated glass doors or in areas where occupant comfort is critical, such as classrooms, hospitals, or executive office suites. These glazing configurations are also helpful in environments where privacy, sound isolation, and temperature control are important. While more expensive, they offer multi-benefit performance that can offset the higher initial cost through improved building efficiency and user satisfaction. Proper specification and installation are critical to achieving the expected performance from these complex systems.
Wire glass was once common, but is now restricted in many jurisdictions due to impact safety limitations. Traditional wired glass tends to shatter into sharp fragments and fails safety glazing standards unless modified with surface films. Its use has been largely phased out in favor of clear ceramic or laminated alternatives that meet both fire and impact safety standards. Where wire glass is still permitted, it is often limited to small lite sizes and non-impact locations. Most modern buildings now require fire rated glazing that is also impact rated to ANSI Z97.1 or CPSC 16 CFR 1201, especially in schools and public buildings.
By Mounting and System Type
Fire rated glass doors can be framed, semi-framed, or frameless, depending on the desired aesthetic and the tested assembly. Fully framed systems are the most robust and are commonly used in rated corridors or stair enclosures where higher ratings and mechanical performance are required. These systems provide the most flexibility in terms of glass type, door hardware, and integration with sidelites or transoms. They are typically built with hollow metal or tube steel framing and can include various levels of architectural detailing. While they may be more visually prominent, they offer maximum performance and code compliance.
Semi-framed or butt-glazed assemblies offer a more minimalist look but still rely on tested and listed framing elements. These systems are often used in interior partitions where designers want the appearance of seamless glass but still need to maintain fire resistance. Vertical joints between panels may be sealed with silicone or intumescent materials, and specialized hardware allows for a clean finish while maintaining structural stability. These configurations can provide a high-end aesthetic without sacrificing function, but they must be properly supported and aligned during installation. Careful attention must be paid to edge clearances, anchor points, and compatibility with adjoining materials.
Frameless fire rated glass doors, while limited in fire rating options, are becoming more common in high-end interiors when paired with rated top and bottom rails and clear intumescent seals. These doors offer the cleanest possible appearance, with minimal visible framing and full transparency. They are typically rated for 20 to 45 minutes and are used in decorative partitions or lobbies where code allows limited ratings. These systems require precision manufacturing and installation to ensure that gaskets, seals, and hardware align properly under fire conditions. Although they are not suitable for all applications, frameless systems can be an excellent solution when design goals prioritize visual openness.
Code Requirements and Performance Standards
U.S. Codes and Standards
In the United States, fire rated glass doors are governed by a framework of codes and standards that specify where they are required, how they must perform, and what testing is needed to certify compliance. The International Building Code (IBC) is the most widely adopted model code, and it dictates fire-resistance requirements for door openings based on occupancy type, building height, fire separation distance, and means of egress. IBC Chapter 7, which addresses fire and smoke protection features, outlines the requirements for rated door assemblies, including fire protection ratings, temperature rise limits, and smoke and draft control. The requirements also vary depending on whether the door is installed in a fire partition, smoke barrier, exit enclosure, or shaft enclosure. Understanding the context in which a fire rated glass door is used is essential to selecting the appropriate rating and configuration.
In addition to the IBC, several performance-based standards are used to certify and test fire rated glass door assemblies. NFPA 80 governs the installation, maintenance, and inspection of fire doors and other opening protectives, setting the rules for annual inspections and field modifications. NFPA 252 provides the standard fire test method for door assemblies, including exposure to fire and hose stream resistance. UL 10B and UL 10C define neutral pressure and positive pressure testing methods, with UL 10C being the more current and widely accepted approach. UL 1784 addresses smoke leakage, which is required for doors that form part of smoke barriers or are designated as smoke and draft control assemblies.
ASTM E119, another foundational standard, is used to test fire-resistive assemblies and is typically applied to fire-resistive glazing and wall systems rather than fire-protective products. When a fire rated glass door must block not only flame and smoke but also radiant heat, it is essential that the glazing component meet ASTM E119. This standard is much more demanding than those used for fire-protective assemblies and simulates a full fire event over a prolonged period. For full compliance, door frames and hardware must also be compatible with the higher rating and thermal insulation requirements. Design professionals must pay close attention to which standard applies to the intended use and verify that the entire assembly is tested as a unit under the appropriate criteria.
Navigating these codes and standards requires more than a basic understanding of fire resistance ratings. It involves careful coordination with code officials, manufacturers, fire protection engineers, and inspectors. Misinterpretation of rating tables, or confusion between standards such as UL 10C and ASTM E119, can result in using the wrong product for a given application. This can lead to delays during plan review or failed inspections after installation. To avoid these issues, specifiers should always reference listing documents and ensure that fire rated glass doors are included in the approved submittal set with test report numbers clearly documented.
International Standards
While the United States primarily follows the IBC, UL, NFPA, and ASTM standards, international markets may use different testing procedures and classifications. In the European Union, fire rated doors and glazing systems are tested according to EN 1634-1 for fire resistance of doors and EN 1364 for non-loadbearing walls and partitions. These tests differ from their American counterparts in both methodology and performance evaluation. For instance, European standards measure integrity and insulation separately, with classifications such as E (integrity only), EW (integrity and limited radiation), and EI (integrity and full insulation). Understanding the equivalency and differences between these classifications is important for global projects and for manufacturers selling into both markets.
CE-marked assemblies, which comply with European standards, are sometimes proposed on international projects that adopt EU building codes. However, these products are not automatically recognized under U.S. codes unless they have been cross-tested and listed by a U.S.-accredited laboratory. For example, an EI60 rated European door may perform well, but it still requires UL or Intertek testing under U.S. standards to be used in American jurisdictions. The opposite also holds true: products tested to UL 10C may not be accepted in EU countries unless they are tested to EN 1634. This makes dual testing and listing essential for multinational manufacturers and specifiers working across regulatory boundaries.
In international projects, coordination between local code officials, fire safety consultants, and global design teams becomes essential. There are often additional requirements for documentation, translation of test reports, and on-site inspections to confirm compliance. The cost and complexity of international fire rated glass door systems can increase significantly when compliance requirements differ between building codes. To mitigate these risks, many global manufacturers have developed region-specific product lines or have established certification agreements with third-party testing agencies in multiple countries. This helps streamline specification and approval processes in diverse markets.
It is also worth noting that regional fire codes may incorporate other considerations not found in IBC or EN standards. For example, some Middle Eastern and Asian jurisdictions impose stricter temperature-rise limits or require integration with centralized fire monitoring systems. Specifiers working on international projects should not assume that products listed for U.S. use will automatically meet all local requirements. A proactive approach to code research and early engagement with local regulatory bodies is essential when dealing with international fire rated door projects.
Ratings and Testing Classifications
Fire rated glass doors are classified based on the duration of fire exposure they can withstand and the specific hazards they are designed to mitigate. The most common ratings are 20, 45, 60, 90, and 120 minutes. However, these numbers alone do not tell the full story. A 45-minute rating may meet requirements for one type of wall but be insufficient for another. Moreover, doors that are subject to fire exposure from both sides, such as those used in double-loaded corridors or atrium separations, must be tested accordingly to reflect actual field conditions.
The testing process simulates a fully developed fire using time-temperature curves, typically peaking at over 1800 degrees Fahrenheit. During testing, the door assembly must remain intact, prevent passage of flames, and often resist the impact of a fire hose stream applied immediately after fire exposure. This hose stream test is critical because it evaluates the mechanical integrity of the door under extreme thermal and physical stress. It replicates the scenario of a fire being extinguished by firefighters and tests whether the door can remain in place after such an event. Products that pass only the fire exposure test but fail the hose stream test are not considered suitable for use in many rated openings.
Some doors are also rated for temperature rise, meaning they limit the temperature on the non-fire side of the door for a specific period. This rating is particularly important in stair enclosures and egress paths, where controlling radiant heat is essential to maintain survivable conditions. Temperature-rise doors are often required to restrict the surface temperature rise to 250 degrees Fahrenheit or less after 30 minutes. This requires the use of fire-resistive glazing and specialized framing materials that provide thermal insulation in addition to structural protection. Designers must be aware of these requirements, especially in high-rise construction or buildings with long egress travel distances.
Another important classification is the smoke and draft control rating, which requires compliance with UL 1784. This test evaluates whether the door can limit the passage of smoke under specified pressure conditions. Smoke-rated fire rated glass doors must be equipped with perimeter gaskets and automatic door bottoms that activate upon closure. These features are particularly important in healthcare, educational, and assembly occupancies, where smoke can be more dangerous than flames. Without proper smoke control, fire doors can become points of failure in the larger compartmentation strategy.
Fire Rated Glazing Technologies
Types of Fire Rated Glass
There are several fire rated glazing technologies available today, each designed to meet different performance requirements and aesthetic preferences. One of the most commonly used materials is clear ceramic glass, which can withstand extremely high temperatures without breaking or distorting. This type of glass is chemically stable and remains transparent during fire exposure, which allows occupants and emergency responders to maintain visual contact through a rated barrier. However, it does not block radiant heat, meaning it is considered fire-protective rather than fire-resistive. While clear ceramic glass works well for applications like vision panels in doors rated up to 45 minutes, it is not suitable for areas that require thermal insulation or where occupants are expected to be exposed to heat for extended periods.
Another widely used technology is intumescent laminated glass, which consists of multiple layers of float glass and intumescent interlayers. When exposed to heat, the intumescent material expands to many times its original thickness, forming an opaque, insulating barrier that blocks both flame and radiant heat. These systems are capable of meeting the ASTM E119 standard and are typically used in door assemblies rated for 60, 90, or even 120 minutes. In addition to providing fire resistance, they also offer sound insulation and security benefits. Because these units are thicker and heavier than monolithic glass, they often require specially engineered framing and hardware systems to ensure proper installation and long-term performance.
Advanced glazing options include fire-rated insulated glass units (IGUs), which combine fire-rated inner layers with insulating air or gas spaces. These systems provide enhanced thermal and acoustic performance while still meeting fire resistance standards. For example, a fire-resistive IGU might feature an intumescent core laminated between two float glass layers, all encapsulated within a larger insulating unit. This type of product is ideal for environments that require both energy efficiency and life safety, such as modern office buildings, healthcare facilities, or high-performance educational buildings. While more expensive and complex to fabricate, these IGUs offer multiple benefits in a single glazing solution.
Some specialty fire rated glass products incorporate additional performance characteristics, such as impact resistance, forced-entry protection, or ballistic resistance. These are often used in high-security environments like government buildings, airports, or correctional facilities. In these cases, the fire-rated glass is combined with security laminates or polycarbonate layers, all of which must be tested together as a single unit. It is critical to confirm that any multi-performance glazing is listed and labeled for both fire and impact or security resistance, since mixing unrelated technologies can compromise one or both ratings. Manufacturers will typically provide test data and certification to support such applications, but it is the responsibility of the specifier to ensure that the intended performance is documented.
When selecting a type of fire rated glass, it is essential to understand the intended function of the door assembly, the required rating duration, and any additional performance demands such as acoustics, UV resistance, or environmental sustainability. No single glass product fits all applications, and choosing the wrong type can result in failure during a fire event or noncompliance with local building codes. Early consultation with manufacturers and code officials can help ensure that the selected product meets all applicable criteria. Each glass type brings trade-offs in terms of appearance, thickness, cost, and complexity of installation. By understanding these differences, project teams can make informed decisions that align with both design intent and life safety goals.
Thermal, Acoustic, and Optical Performance
Modern fire rated glass doors are expected to deliver more than just fire resistance. In many projects, these assemblies are also evaluated for their thermal performance, acoustic control, and visual quality. Architects and building owners increasingly seek glazing systems that contribute to energy efficiency goals and occupant comfort, especially in spaces where environmental control is critical. As a result, fire rated glass products are now available with enhanced insulating properties, including low-emissivity coatings, argon-filled cavities, and warm-edge spacers. These features can help reduce heat transfer, improve indoor air quality, and lower HVAC loads, particularly in buildings striving for LEED or WELL certification.
Acoustic performance is another key consideration, particularly in healthcare, education, and office environments. Fire rated glass doors that separate patient rooms, classrooms, or conference areas must often reduce sound transmission as well as provide fire separation. Laminated fire-resistive glass offers natural sound-dampening properties due to its layered construction, and when combined with appropriate seals and frames, it can achieve sound transmission class (STC) ratings of 40 or higher. This level of acoustic control is essential for privacy, concentration, and well-being in modern buildings. It also allows fire rated glass to replace traditional solid doors in many applications without sacrificing acoustic performance.
In terms of optical clarity, fire rated glass has come a long way. Early generations of fire-rated glazing often exhibited yellow or green tints due to the ceramic or wire materials used. Today, most products are available in low-iron or optically neutral versions that provide crystal-clear transparency. This is especially important in commercial or high-end institutional projects where the aesthetics of the glazing are just as important as the performance. Designers can now specify fire rated glass with minimal color shift, edge distortion, or reflectivity, allowing for visual consistency across both rated and non-rated areas of a building.
Some fire rated glazing products can also be customized with decorative treatments, such as digital printing, etched patterns, or applied films. While these features can enhance the visual appeal of the door, they must be part of a listed assembly if the door is to maintain its fire rating. Applying aftermarket films or coatings without manufacturer approval can void the listing and create compliance issues during inspection. Always consult with the glass manufacturer before making any aesthetic modifications to a fire rated product. Approved decorative options can be integrated during fabrication and will be tested as part of the final assembly.
Ultimately, the performance of a fire rated glass door depends not only on its ability to resist fire, but also on how well it integrates with the thermal, acoustic, and optical goals of the project. This makes early-stage coordination among design, engineering, and product selection teams crucial. Failing to account for these secondary performance characteristics can lead to compromise or late-stage redesign. When specified properly, fire rated glass doors can support a wide range of project goals, from energy savings and occupant well-being to security and aesthetics. This multi-functionality is one of the reasons they have become so essential in high-performance building design.
Fire Door Assembly Components
Frames and Structural Elements
The frame is a fundamental component of any fire rated glass door assembly. It must be constructed from materials that can withstand high temperatures without deforming or compromising the integrity of the opening. Steel is the most commonly used material due to its strength, durability, and ability to carry fire ratings of up to three hours when tested as part of a complete system. These frames are available in various profiles and thicknesses, ranging from narrow architectural sections to heavy-duty industrial frames used in utility spaces or institutional applications. The choice of frame profile can significantly affect the aesthetic and performance of the door assembly, so early coordination between the architect and door manufacturer is essential.
Frames may be fabricated from cold-rolled steel, stainless steel, or aluminum, each with different strengths and limitations. Cold-rolled steel frames are robust and cost-effective, making them suitable for most commercial applications. Stainless steel is often selected for environments that require corrosion resistance or where visual cleanliness is a priority, such as healthcare, pharmaceutical, or laboratory settings. Aluminum frames can be used in lower-rated assemblies when paired with thermal breaks and internal fire-rated reinforcements. However, their fire resistance is typically lower than steel unless specially engineered and tested, so designers should consult with manufacturers before specifying aluminum frames for higher ratings.
In fire rated assemblies, the frame must be tested and listed with the glazing and hardware as part of a complete system. This means the exact frame profile, material, and configuration used during fire testing must be replicated in the field. Substituting different frame profiles or modifying anchor methods can void the listing and cause the door to fail inspection. Anchoring and attachment to surrounding wall assemblies must also follow the tested installation method to ensure stability under fire conditions. Coordination between door installers and wall framers is critical to achieve proper alignment, anchoring, and tolerance control.
Framing systems can also include transoms, sidelites, or borrowed lites, which must be part of the tested assembly if they are to be used in rated applications. These additional glazing elements must meet the same fire rating as the door itself and be supported by compatible framing members. The entire assembly, including the door, glass, frame, and attachments, must work together as a single, integrated barrier. Detailed shop drawings and manufacturer-approved submittals are essential for ensuring that the final installation matches the tested configuration. Any deviation from the approved design must be reviewed by the authority having jurisdiction (AHJ) or an accredited testing agency.
Hardware Compatibility
Hardware is another critical aspect of fire rated glass door assemblies. The latching, closing, and locking mechanisms must function reliably under high temperatures and contribute to maintaining the fire barrier. Fire rated doors are required by code to be self-closing and self-latching, which means every hardware component must be capable of operating under fire conditions. This includes hinges, closers, exit devices, locks, electric strikes, and automatic operators, all of which must be tested and listed for use in rated assemblies. Hardware selection is not merely a matter of function or appearance but a life safety decision that directly impacts code compliance.
Each hardware item used on a fire rated glass door must be UL listed or listed by another accredited agency for the same fire rating as the door. Using non-rated or incompatible hardware can cause the assembly to fail in a fire or during inspection. For example, an improperly sized closer may not provide the force needed to ensure full latching, while an electric strike without fire rating may fail to operate if the building loses power. In many cases, electrified hardware must also be fail-safe or fail-secure depending on its location and intended function, and it must integrate with the buildingโs fire alarm and access control systems. Coordination between the electrical engineer, security consultant, and door hardware supplier is necessary to avoid conflicts.
Certain applications require additional hardware features such as panic devices for egress, door position switches for monitoring, or automatic operators for accessibility. All of these components must be tested as part of a fire rated system or evaluated by a recognized testing laboratory for field installation. In healthcare and educational settings, where specialized functions are often required, it is common to see multi-point latching systems or door coordinators that control the order in which double doors close. Each additional component adds complexity, making it even more important to verify compatibility and proper installation procedures. Incorrect installation or field modification of hardware can void the rating and compromise the assemblyโs performance during a fire.
Intumescent edge seals and gaskets are often overlooked but play a critical role in maintaining the performance of fire rated glass doors. These materials expand under heat to seal gaps between the door and frame, preventing the passage of flames and smoke. In smoke-rated doors, perimeter gasketing and door bottoms are required to pass UL 1784 tests for air leakage. The performance of these seals depends on proper installation, including alignment, compression, and unbroken continuity around the door perimeter. If the seals are missing, damaged, or installed incorrectly, the assembly may pass fire tests but fail smoke leakage tests, resulting in non-compliance with code requirements.
Vision Kits and Glazing Accessories
Vision kits and glazing accessories are essential components that ensure the fire rated glass remains secure and functional during a fire. A vision kit includes the glazing frame, stops, clips, and sometimes intumescent materials that hold the glass in place under high temperatures. These elements must be tested as part of the door assembly and must be made of materials that can resist warping or melting during a fire. The installation of the glass into the door must follow the manufacturerโs instructions precisely, using the specified setting blocks, glazing tape, and fasteners. Even small deviations, such as using the wrong type of screw or omitting an intumescent tape, can compromise the rating of the door.
Fire rated vision kits are typically constructed from steel or other non-combustible materials, and they are designed to maintain pressure on the glass as it expands and contracts during a fire. The size of the glass opening is also limited based on the fire rating and type of glass used. For example, doors rated over 45 minutes typically require vision lites to be glazed with fire-resistive glass rather than fire-protective glass. Larger glass areas must be part of tested full-lite door assemblies, and cannot be created in the field by enlarging an opening in a standard fire door. Doing so would invalidate the label and potentially expose occupants to greater risk during a fire.
Setting blocks are used to support the weight of the glazing and provide proper edge clearance, allowing for thermal expansion without stressing the glass. Glazing tapes and intumescent materials form a seal around the perimeter of the glass, preventing hot gases and flames from bypassing the glazing pocket. These materials must be compatible with both the glass and the door material and must be installed with the correct compression and alignment. Improper seating of the glass, or the use of field-cut components not included in the tested assembly, can lead to early failure or glass breakage during fire exposure. Proper training of field installers is essential to ensure all glazing accessories are installed correctly.
It is also important to understand that fire rated glass must not be replaced with non-rated glass, even if it appears similar in thickness and appearance. Only the exact glass type listed in the door assembly can be used during replacement or repair. Additionally, vision kits may need to be labeled separately or documented in the manufacturerโs submittal package to verify compliance. Building owners should keep records of the original glass type, installation method, and any repairs or replacements made over the life of the door. This ensures that the integrity of the fire rated assembly is maintained throughout its service life.
Performance Testing and Fire Certification
Fire Testing Methodologies
Fire rated glass doors must undergo rigorous testing procedures to validate their performance under simulated fire conditions. These tests are conducted by nationally recognized testing laboratories such as UL (Underwriters Laboratories), Intertek (Warnock Hersey), or other accredited agencies. The testing process subjects the entire door assembly, including the glass, frame, hardware, and seals, to extreme heat based on the standard time-temperature curve that reaches over 1800 degrees Fahrenheit within 120 minutes. During the test, the assembly must prevent the passage of flames and hot gases for the duration specified by its fire rating. In some cases, the door is also tested for structural stability during the fire, including how it holds up against deformation or warping under prolonged heat exposure.
One of the most important parts of the fire testing protocol is the hose stream test. This test is designed to simulate the conditions a door would experience when being hit by water from a fire hose immediately following exposure to fire. The hose stream introduces both mechanical impact and thermal shock, which can cause glass or framing to shatter or fail if not properly engineered. A door that passes the fire exposure portion but fails the hose stream will not be certified for use in many code-required applications. The hose stream test is particularly important for rated doors used in corridors, stairwells, and other critical locations where occupant safety and firefighter access depend on reliable fire barriers.
Positive pressure testing has become the dominant standard in the United States, replacing older neutral pressure test methods. UL 10C is the standard that governs positive pressure testing, and it simulates the real-life pressure differentials that occur during a fire event. These pressure differences force heated gases and smoke through the upper parts of the door assembly, placing stress on the seals and hardware. Doors that are not adequately sealed or that rely on weak hardware will fail this test. Positive pressure testing ensures that fire rated glass doors will perform consistently in actual building fire conditions, not just in laboratory scenarios.
Temperature rise criteria are also tested for specific applications where limiting heat transfer is critical. A temperature rise door is one that restricts the temperature increase on the unexposed side to 250 degrees Fahrenheit or less within the first 30 minutes of the test. This rating is especially important for stair enclosures and egress routes, where excessive heat can make passage unsafe or even impossible for building occupants. Doors that meet this standard must include not only fire resistive glazing but also insulated cores and frames designed to limit thermal conduction. These doors often require advanced engineering and precise installation to ensure that all components function correctly during a fire.
The results of these tests are compiled into detailed certification reports and listings. These documents include the precise configuration of the tested assembly, including the exact type of glazing, frame, hardware, sealants, and installation methods. Only assemblies that replicate the tested configuration are considered compliant. Any deviation, even a seemingly minor one, must be re-tested or approved through a field evaluation by a qualified agency. This level of scrutiny ensures that fire rated glass doors installed in the field will deliver the same performance as those evaluated in the lab. It also places a responsibility on design professionals and installers to verify that listed assemblies are matched exactly during procurement and construction.
Certified Assemblies and Labeling
Once a fire rated glass door assembly passes all required tests, it is granted a certification listing from the testing laboratory. This listing is not simply a formality but a legally recognized document that confirms the door has been tested and meets the necessary performance standards. The listing includes a unique identifier for the assembly, the fire resistance rating, the dimensions and materials used, and any limitations or installation instructions. The door is then labeled in the factory with a permanent mark, usually a metal tag or printed label affixed to the hinge edge or top rail. This label provides the essential information inspectors need to verify that the door complies with code requirements.
The label on a fire rated door includes the name of the listing agency, the fire resistance duration in minutes or hours, and additional notes such as temperature rise or smoke rating. It may also indicate whether the door is part of a single- or double-leaf assembly and list any hardware or glazing limitations. These labels are not optional and cannot be removed, painted over, or obscured during installation or finishing. If a label is missing or damaged, the door cannot be considered compliant without re-certification. Field-applied labels are only permitted in limited situations and must be approved and administered by the original listing agency or an authorized field labeling program.
Maintaining the integrity of the label is vital not just during initial installation but throughout the life of the building. During inspections, fire marshals or code enforcement officers will check for labels to confirm that fire rated assemblies are in place as specified. Doors that do not have visible labels, or that show signs of unauthorized modification, will typically fail inspection and may require costly remediation. For building owners and facility managers, it is essential to keep a record of all installed fire rated doors, including their ratings, manufacturers, and listing numbers. This documentation is useful not only for compliance but also for future maintenance and repair work.
The label also serves as a deterrent against improper field modifications. Fire rated glass doors are often targeted for hardware changes, glazing replacements, or security upgrades after initial construction. Without proper guidance, these modifications can easily compromise the fire rating. For instance, adding a camera, access control device, or even changing a hinge can change the performance characteristics of the door. The label acts as a visual reminder that the assembly is certified and must be treated accordingly. Any change to a labeled assembly should be reviewed and approved by the manufacturer or an accredited testing agency.
Certification listings are available to the public and can often be accessed online through the testing laboratoryโs website. This allows architects, contractors, and code officials to verify the compliance of specific products or assemblies before and after installation. It also provides transparency and accountability in the supply chain, helping to prevent the use of counterfeit or substandard fire rated components. By consulting the listing, professionals can ensure that the fire rated glass doors they are specifying and installing meet the exact requirements of the applicable codes. This process reinforces the overall integrity of the buildingโs fire safety strategy and supports long-term code compliance.
Design and Specification Guidance
Design Considerations for Fire Rated Glass Doors
From an architectural perspective, fire rated glass doors provide a rare opportunity to combine high-performance life safety with refined visual expression. These systems allow for continuity of sightlines, openness, and transparency while still meeting rigorous fire protection standards. Designers no longer have to choose between a visually closed-off fire barrier and an open plan aesthetic. With the advancements in glazing technology and framing options, fire rated glass doors can now be used to achieve both life safety and design goals simultaneously. This is particularly valuable in commercial interiors where transparency, natural daylight, and occupant orientation are essential.
In many commercial projects, fire rated glass doors are used in main corridors, conference rooms, lobbies, and tenant entries to create a seamless transition between spaces. They help reduce the feeling of confinement that can occur in highly compartmentalized floor plans, especially in buildings where fire separation walls are required at frequent intervals. Full-lite fire rated doors can visually connect rooms while still providing the rated protection that codes demand. This is especially important in high-rise office buildings, schools, and healthcare environments where both safety and visual connectivity are required. These applications demonstrate that fire protection does not need to be at odds with good design.
The choice of framing system significantly influences the visual outcome. Narrow-profile steel frames are often used to create clean lines and modern aesthetics. These frames can be specified in a wide range of finishes including clear anodized, powder-coated, and stainless steel options that can match the rest of the buildingโs hardware and trim. Designers can also choose from different glazing configurations such as single-lite, divided-lite, or even asymmetrical patterns that enhance the architectural style of the space. Fire rated doors with custom metal finishes or integrated design elements are no longer an exception but an increasingly common feature in higher-end commercial interiors.
In more demanding design environments, fire rated glass doors can be integrated with borrowed lites, sidelites, or full-height glazing walls to create expansive yet code-compliant partitions. These assemblies can be used in corridors, lobbies, or between rooms to preserve transparency while maintaining a compartmentalized fire strategy. When designed properly, the transition between rated and non-rated spaces can be virtually invisible. However, every component must be part of a tested and certified assembly, including mullions, transoms, and any decorative or structural elements. This makes early-stage coordination between the architect, fire protection engineer, and glazing supplier essential.
To ensure success, the design process should always begin with a clear understanding of the fire resistance requirements for each location in the building. These requirements will dictate not only the fire rating of the glass but also the type of framing, hardware, and installation details needed to maintain code compliance. Specifiers should consider sightline dimensions, light transmission goals, acoustic performance, and any security needs early in the design phase. This allows for a comprehensive solution that balances form and function without the need for compromise during construction. A well-integrated fire rated glass door system becomes a seamless part of the buildingโs architecture rather than a visual interruption.
Specification Best Practices
Accurate specification of fire rated glass doors is critical for ensuring performance, compliance, and constructability. The specifications must clearly indicate the required fire rating, the wall construction in which the door will be installed, the glazing type, and the door and frame materials. It is not enough to simply state that a fire rated door is required. The specifier must include performance criteria such as compliance with UL 10C, positive pressure rating, temperature rise limitations if applicable, and smoke and draft control requirements. Including all of these details in Division 08 of the project specifications ensures that bidders, contractors, and code officials have a complete understanding of the requirements.
Another important specification detail is compatibility. The door leaf, glazing, frame, and hardware must be listed together as a tested and approved assembly. Mixing and matching components from different manufacturers, unless they have been cross-tested and approved, is not permitted and will often result in inspection failures. The specification should list acceptable manufacturers and product lines that meet all necessary standards. It is also wise to include language that prohibits substitution without prior written approval from the design professional. This prevents value engineering from introducing non-compliant or inferior products late in the construction process.
When drafting specifications for commercial fire rated glass doors, include any necessary certifications such as ANSI Z97.1 or CPSC 16 CFR 1201 for safety glazing. Many jurisdictions also require compliance with NFPA 80 for installation and annual inspection standards. If the door will be part of a smoke barrier, confirm that it meets UL 1784 requirements and include a description of the required gaskets, sweeps, or automatic door bottoms. Hardware specifications should detail electrified hardware requirements, fail-safe or fail-secure operation, and any integration with access control or life safety systems. Including these elements during specification helps reduce confusion and conflict during construction.
Coordinate closely with fire protection engineers, access control consultants, and door hardware suppliers during the design and documentation phases. Fire rated glass doors often serve multiple roles in a buildingโs life safety strategy and need to meet multiple performance objectives. It is common for a single door to be fire rated, acoustically rated, ADA compliant, and connected to a building automation or access control system. Managing all of these requirements demands a well-documented specification and a knowledgeable team. Submittal reviews should include verification of fire ratings, labeling requirements, installation instructions, and third-party listings.
Lastly, include requirements for submittals and mock-ups if the project involves complex or highly visible door systems. A full-size mock-up allows the design team to evaluate the appearance, hardware operation, and detailing before full fabrication begins. Submittal documentation should include drawings, product data sheets, certification listings, and installation instructions for all components of the fire rated glass door system. Ensuring that these materials are reviewed and approved early in the process reduces the likelihood of delays, redesigns, or compliance issues during the construction phase. A complete and accurate specification supports not only code compliance but also project efficiency and overall design quality.
Installation and Inspection
Pre-Installation Considerations
Before any fire rated glass door is installed on a job site, several critical steps must be taken to ensure that the assembly will perform as intended and meet all code requirements. Pre-installation preparation involves more than verifying dimensions; it includes reviewing the approved submittals, confirming that listed components are delivered to the site, and checking that the rough opening complies with both the manufacturerโs instructions and the applicable building codes. The door, frame, glazing, and hardware must all match what was tested and certified as part of the original listing. Any discrepancy between the submittal documents and the products delivered can result in delays or even failed inspections. It is therefore essential that the general contractor and subcontractors coordinate closely to confirm that the correct materials are present and undamaged prior to starting installation.
The rough opening should be carefully measured and inspected for plumb, level, and square conditions. Tolerances must fall within the manufacturerโs guidelines, which are typically quite strict for rated assemblies. Wall construction around the door must be rated appropriately and finished to allow secure anchoring of the frame. If the surrounding wall does not meet the required fire resistance, the performance of the door system may be compromised. Additionally, backing materials such as fire-retardant-treated wood or steel studs may be needed to support hardware or hold anchors in place, especially for large or heavy doors. All substrates must be structurally sound and capable of withstanding both normal operational loads and fire conditions.
During this pre-installation phase, installers should confirm that all fire labels are visible, undamaged, and legible. Labels are critical for inspection and compliance purposes and must not be removed, painted over, or altered in any way. If a label appears to be missing or incorrect, the manufacturer or listing agency should be contacted before proceeding. The use of field-applied labels is limited and often subject to additional verification by third-party agencies. Keeping accurate records of each labeled assembly, including photos and product data sheets, helps facilitate smooth inspections and long-term maintenance.
Training and qualifications of the installers are another important consideration. Fire rated assemblies require specialized knowledge, and not all glazing or door installers are familiar with the unique demands of these systems. Manufacturers often provide installation manuals, training courses, or certification programs that should be completed before any work begins. A trained installer understands how to handle intumescent materials, align the frame correctly, apply perimeter seals, and attach hardware without damaging the door structure. Poor installation practices are among the most common causes of failure during fire testing or field inspections, so investing in training is not optional when life safety is at stake.
Coordination among trades is also critical. The MEP, security, drywall, and finish teams all work in close proximity to fire rated doors, and their work can easily interfere with installation tolerances or clearances if not carefully coordinated. For example, recessed lighting or HVAC ducts placed too close to the door frame may obstruct anchor points or create weak spots in the fire-rated wall. Similarly, running wires for access control systems or sensors through the door frame must be done using approved firestop materials and in compliance with the tested assembly. Identifying these conflicts early in the process helps avoid costly changes or rework later in construction.
Field Installation and Coordination
Proper field installation of fire rated glass doors is essential to ensuring that the system performs as required in the event of a fire. Unlike non-rated doors, fire rated assemblies must be installed according to very specific guidelines that replicate the conditions used in the original fire test. This includes the placement of anchors, the type and size of fasteners, the alignment of the frame, and the clearance between the door and frame. Even small deviations in these details can cause the assembly to behave differently during a fire, potentially leading to early failure. Installers must therefore follow manufacturer instructions to the letter, without substitutions or improvisation.
Frames must be anchored securely at all specified points and checked for plumb and square alignment. Shimming is allowed but must not interfere with frame performance or create gaps that compromise the doorโs seal. Anchors must be installed into fire-rated wall substrates and spaced according to the listing requirements. Improper anchoring can cause the frame to shift or distort under thermal stress, which could result in glass breakage or hardware failure. Once the frame is in place, it should be rechecked after drywall or finish materials are installed to ensure that no movement or misalignment has occurred.
Glazing must be installed using the exact materials and methods specified in the tested assembly. This includes the use of listed setting blocks, intumescent tapes, glazing beads, and sealants. The glass should be centered in the frame with the appropriate edge clearance to allow for thermal expansion. If the glass is installed too tightly or without proper cushioning, it may shatter under heat or pressure. Gaskets must be applied without gaps and should be compressed evenly along all edges. Installers should avoid using unlisted substitutes for any part of the glazing assembly, even if the materials appear similar.
Hardware installation must also be done with care, particularly for electrified components or exit devices. Pre-drilled holes must match the hardware templates and must not penetrate beyond the specified depth or location. Reinforcements must be in place where required, and all fasteners should be torqued to the manufacturerโs recommendations. If a hardware component is incompatible with the fire rated assembly or installed improperly, it can create a point of failure. For electrified systems, coordination with the electrical team is necessary to ensure that conduit, junction boxes, and wire routing do not interfere with door operation or violate the tested configuration.
After installation, the door must be checked for smooth and secure operation. It should close and latch completely on its own without binding or sticking. The clearances at the top, bottom, and sides of the door must be within the limits defined by NFPA 80, which are typically less than one-eighth of an inch on the sides and top, and three-quarters of an inch at the bottom. Smoke seals and automatic door bottoms, if present, should activate correctly and provide a continuous seal. Any hardware requiring adjustment or fine-tuning should be addressed before final inspection to avoid compliance issues.
Inspection and Compliance
Inspection of fire rated glass doors is a crucial step in the approval and occupancy process. According to NFPA 80, all fire door assemblies must be inspected annually to ensure that they continue to meet the original performance requirements. For new construction, the first inspection typically occurs just before final occupancy and is conducted by the authority having jurisdiction or a third-party inspection agency. The inspection process involves a visual and functional assessment of each component in the assembly, including labels, clearances, glazing, hardware, gaskets, and operation. Any missing, damaged, or altered components must be repaired or replaced before the door is considered compliant.
During inspection, the fire label must be visible and legible. If the label is obscured by paint, damaged, or missing, the inspector may reject the door unless field labeling is arranged through an approved agency. The inspector will also check that the door closes and latches completely without assistance, that the hardware is tight and functional, and that any self-closing devices operate properly. Smoke-rated doors must pass a separate inspection for perimeter seals and leakage control, including verification that automatic door bottoms or sweeps are in place and undamaged. If the door fails any part of the inspection, it must be brought into compliance before a certificate of occupancy can be issued.
Maintenance of fire rated glass doors does not end after installation. Building owners and facility managers are responsible for ensuring ongoing compliance through regular maintenance, inspections, and documentation. Any repairs must use components listed for use in the original assembly, and field modifications must be approved by the manufacturer or listing agency. Unauthorized changes, such as drilling for new hardware or replacing glass with non-rated material, can void the certification and create liability issues. Keeping accurate records of inspections, repairs, and certifications provides protection in the event of a fire or audit.
In multi-tenant or large commercial buildings, facility personnel should be trained to identify signs of damage or wear that could affect door performance. This includes checking for sagging hinges, worn latches, damaged seals, and any obstructions that prevent the door from closing properly. A proactive inspection schedule, combined with timely repairs, can help ensure that fire rated doors function properly for the life of the building. Periodic coordination with local fire officials can also help ensure that changes in code or enforcement policy are addressed in a timely manner.
Proper inspection and maintenance of fire rated glass doors is not just a matter of code compliance; it is a critical part of the buildingโs life safety strategy. These doors exist to protect people and property during some of the most dangerous situations a building can face. Keeping them in working condition requires diligence, expertise, and a commitment to safety from everyone involved in their specification, installation, and long-term care.
Final Thoughts
Fire rated glass doors represent a critical intersection of life safety engineering, architectural vision, and building code compliance. As the demands of modern construction continue to evolve, these doors provide a solution that allows for transparency, design continuity, and passive fire protection without compromise. They are no longer limited to industrial or utilitarian settings but are now integral features in high-end commercial, educational, healthcare, and institutional projects. However, their successful implementation depends on careful planning, proper specification, and precise installation, all grounded in a thorough understanding of fire testing standards and regulatory requirements. Each component of the assembly, from the glazing to the frame to the hardware, must be selected and installed as part of a tested and certified system.
Professionals in the design and construction industry must recognize that fire rated glass doors are not off-the-shelf products that can be adapted in the field without consequence. These are performance systems that must be treated with the same level of detail and coordination as any other critical life safety component in the building. By taking the time to understand how these systems are designed, tested, and maintained, architects, specifiers, engineers, and contractors can help ensure not only compliance but also protection of lives in the event of fire. Collaboration among all stakeholders early in the project is key to achieving the right balance between function and design. When properly integrated, fire rated glass doors offer a powerful combination of safety, durability, and aesthetic value that can enhance the quality and performance of any building.
About USA Fire Door
At USA Fire Door, we understand the critical importance of integrating fire rated glass doors into a buildingโs life safety and design strategy. As a nationwide distributor of commercial door and hardware solutions, we supply high-performance fire-rated doors, frames, and glazing systems to projects of every scale across the United States. Our fire rated glass door products are carefully selected to meet demanding performance standards while aligning with modern architectural needs for visibility, durability, and code compliance.
Whether your project requires full-lite fire rated steel doors, vision kits for solid core wood doors, or specialized glass fire doors that meet both aesthetic and safety goals, we offer tested and certified solutions that are ready to ship directly to job sites in all 50 states. From educational facilities and healthcare centers to high-rise office buildings and hurricane zones, we support a wide range of commercial applications with expertise and dependable service. Our product line includes hollow metal doors and frames, stainless steel systems, fire-rated glass, louvers, and everything needed to complete a compliant and coordinated door assembly.
If you are planning a project that involves fire rated glass doors or you need guidance on selecting the right assemblies for code-compliant performance, we are here to help. Contact USA Fire Door today to speak with a knowledgeable team member or request a quote tailored to your project’s unique specifications. Let us help you simplify your procurement process while delivering safe, code-approved, and visually impressive results.
