Air Louvers VLFMUL Square Profile Through Bolted Metal Vision Lite for 3/16″ to 1/4″ Thick Glazing w/ Framed Mullions
Air Louvers VLF ThruBolt™ Vision Lites with Mullions are fire-rated vision frames featuring a thru-bolt installation design and welded steel mullions for added security and architectural styling, designed for 1-3/4″ commercial doors and 3/16″ to 1/4″ glazing.
- Designed for 1-3/4″ door thickness
- Accepts 3/16″” – 1/4″” glazing thickness
- Fire ratings up to 180 minutes
- 18 gauge cold rolled steel construction
- 1″ welded mullions for divided lite appearance
Product ID: AIR-VLF-MUL
FREE delivery to most businesses and jobsites on qualifying orders.
HOW TO ORDER
- Get a written quote from a USA Fire Door Solutions Specialist
- Approve & we ship your order
- Click the button below or call us to get started. You can upload plans, photos or files if you have them.
Product Details
Air Louvers VLF ThruBolt™ Vision Lites with Mullions combine the strength of the ThruBolt™ frame design with welded steel mullions to create a divided lite appearance while maintaining fire-rated performance. Built from 18 gauge steel, these vision lites use thru-bolt fasteners to provide secure installation while allowing architects and contractors to incorporate decorative or security-focused divided lite configurations. Mullions are welded to both sides of the frame and butt to the glazing while maintaining the use of a single glass pane, making this configuration suitable for commercial door openings requiring durability, design flexibility, and code-compliant fire performance.
Specifications
Application: Standard 1-3/4″” door thickness
Glazing thickness: 3/16″” – 1/4″”
Frame material: 18 gauge cold rolled steel
Standard finish: Mineral bronze powder coat
Fasteners: #8-32 flathead Phillips thru-bolts with blank heads on one side
Minimum size: 4″” x 4″”
Maximum size: Based on glazing listing and door manufacturer approval
Fire ratings: Up to 180 minutes depending on glazing size and listing
UL listings: ANSI/UL 10B, ANSI/UL 10C, CAN/ULC S104
Mullion width: 1″”
Mullion depth: 5/8″”
Mullion construction: Welded to both sides of frame and butted to glass
Mullion configurations: Multiple column and row configurations available
Optional mullion sizes: 1/2″” x 1/2″”, 1/2″” x 3/4″”
Optional materials: 304 stainless steel, galvanneal steel, zinc-plated steel
Compatible fire-rated glazing: Firelite, Pyran Platinum F, Fireglass, WireShield
Compatible non-rated glazing: Tempered glass
Optional fasteners: Torx screws
PAK options: Vision lite, glazing, and glazing tape kits available
Downloads
How to ORDER
Tell us what you need and we'll do the work for you! Most projects are quoted within 24 hours.
01
Step 1
TELL US WHAT YOU NEED
Share any projects details you have. Or just send us a message and we'll have someone reach out to you.
02
Step 2
GET A WRITTEN QUOTE
Your dedicated account manager will send you a quote or contact you with any questions.
03
Step 3
APPROVE & WE SHIP
We'll work with you thoroughout the entire process and carefully track your order until it's received.
Ready to start your commercial door project?
Priority pricing and fast lead times - free delivery to most jobsites and businesses nationwide.
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