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NGP L-GLF100 Square Profile Steel Door Window Lite Frame - Frame Only
The National Guard Products L-GLF100 is a square-profile self-attaching lite kit (frame only -- glass is not included) for 1-3/4" hollow metal or wood doors and 3/16", 1/4", or 5/16" glass. Factory productId 3611 / catalog L12: 18-gauge cold-rolled steel, mitered and welded corners, welded reinforcing clips at corners, countersunk mounting screw-holes, and #6 x 1-3/4" Phillips truss head SMS.
Standard finish is gray primer (GPZ) powder coat. BPR beige primer, DKB dark bronze, and tan primer are offered on this listing at the same size price. Choose visual size (visible lite). Door cutout / order size is visual size plus 2". Factory certifies UL10B / CAN/ULC-S104 and UL10C positive pressure for hollow-metal fire doors up to 3 hours and wood fire doors up to 90 minutes -- NGP does not print a UL file number on the product page.
Product Features
- For 1-3/4" Thick Doors and 3/16", 1/4", or 5/16" Glass
- 18 Ga. Cold Rolled Steel
- Mitered and Welded Corners
- Welded Reinforcing Clips at Corners
- Countersunk Mounting Screw-Holes
- Minimum 3" Width or Height, Maximum 88" Width or Height
- #6 x 1-3/4" Phillips Truss Head SMS
- Gray Primer (GPZ) Powder Coat Finish
- Designed for Use on 1-3/4" Thick Doors Manufactured Within Door Industry Tolerance of +/- 1/16"
Standards
- CERTIFIED by UL to CAN/ULC-S104 and ANSI/UL10B, complies with NFPA 80 and NFPA 252 for application to Hollow Metal fire doors rated up to 3 Hrs., and Wood fire doors rated up to 90 minutes.
- POSITIVE PRESSURE - CERTIFIED by UL to ANSI/UL10C, complies with IBC, NFPA 80 and NFPA 252 for application to Hollow Metal fire doors rated up to 3 Hrs., and Wood fire doors rated up to 90 minutes.
Technical Details
| Model / Series | NGP L-GLF100 |
| Manufacturer | National Guard Products |
| Part type | Door window lite frame (glass not included) |
| Door type | 1-3/4" hollow metal or wood doors (+/- 1/16") |
| Glass thickness (customer supplied) | 3/16", 1/4", or 5/16" |
| Frame | 18-gauge cold-rolled steel, mitered and welded corners |
| Frame profile | Square profile |
| Corner reinforcement | Welded reinforcing clips at corners |
| Visual sizes on this listing | 10" x 10", 6" x 30", 22" x 22", 22" x 28", 22" x 34", 22" x 58" |
| Order size / door cutout | Visual size plus 2" |
| Fasteners included | #6 x 1-3/4" Phillips truss head SMS |
| Finish | GPZ gray primer standard; BPR / DKB / Tan at same size price |
| Fire rating | UL10B / CAN/ULC-S104 and UL10C (factory Standards; no UL file number printed) |
| Catalog | NGP Lite Kits & Louvers Catalog 2026, page L12 |
| Factory page | ngp.com product-detail productId 3611 |
| Visual Size | 6" x 30" or 10" x 10" or 22" x 22" or 22" x 28" or 22" x 34" or 22" x 58" |
| Finishes Lites and Louvers | BPR - Beige Primer or GPZ - Gray Primer or DKB - Dark Bronze or T - Tan Primer |
| Brand | National Guard Products |
| Door Thickness | 1-3/4" Dr Thickness |
| Fire Rated | Fire Rated |
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