Western Integrated Materials 300 Series Borrowed Light Frames are engineered for commercial interior applications requiring fixed glazed openings within wall assemblies. These frames allow natural light to transfer between adjacent spaces while maintaining a consistent aluminum frame system. Manufactured from extruded aluminum, these frames provide durability, corrosion resistance, and a clean architectural appearance. The knock-down design allows efficient installation, with snap-on trim concealing fasteners and improving alignment. The system supports standard wall thicknesses and accommodates a wide range of glazing configurations and mullion layouts while maintaining compatibility with fire-rated assemblies where required.

Specifications
Product type: Extruded aluminum borrowed light frame system
Material: 6063 aluminum alloy extrusion
Construction: Knock-down frame with snap-on trim casing
Frame configuration: Fixed glazed opening (no door)
Installation: Post-wall installation with concealed fasteners
Throat sizes:
3-3/8″
3-3/4″
3-7/8″
4-5/8″
4-3/4″
4-7/8″
5″
5-1/4″
5-1/2″
6″
7-1/4″
Opening configurations: Single, multiple, or custom layouts
Glazing compatibility: Recessed pocket glazing or applied stop glazing systems
Mullions: Available for divided lite configurations
Accessories: Snap-on trim, glazing inserts, and reinforcement components
Finish options:
Clear anodized
Bronze anodized
Black anodized
Baked enamel painted finishes (custom colors available)
Fire rating:
Up to 20 minutes (conditions apply)
Applications: Commercial interiors, offices, healthcare, education, and institutional buildings

Downloads
Western_Integrated_Materials_2018_Catalog.pdf