NGP L-VGLF-MD Security Door Window Lite - 1/2" Lexan, Security Grille, 9" x 9"
The National Guard Products L-VGLF-MD is a security door window lite for 1-3/4" hollow metal or wood doors. Catalog L32 / factory productId 3617: 9" x 9" door cutout / order size, 6" x 6" exposed glass, 1/2" high-impact polycarbonate, a 16-gauge steel 3/4" x 3/4" security grille, and an 18-gauge steel hinged panel in an 18-gauge cold-rolled steel low-profile frame with mitered and welded corners.
The exterior face has no exposed fasteners. Standard finish is gray primer (GPZ) powder coat. #8 x 1" oval-head Tek screws and a 2.8 oz. silicone sealant tube are included. Factory Standards list is empty; NGP install sheet is L-VGLF-no-rating -- sold as a non-rated security vision lite.
Product Features
- 18 Ga. Cold Rolled Steel
- Mitered and Welded Corners
- For 1-3/4" Hollow Metal or Wood Doors
- 1/2" Thick High Impact Polycarbonate Plastic
- 16 Ga. Steel 3/4" x 3/4" Security Grille
- 18 Ga. Steel Hinged Panel
- No Exposed Fasteners on Outside of Door
- Low-Profile Frame
- 6" x 6" Exposed Glass Size
- #8 x 1" Oval Head TEK Screws
- 2.8 oz. Silicone Sealant Included
- Gray Primer (GPZ) Powder Coat Finish
- Designed for Use on 1-3/4" Thick Doors Manufactured Within Door Industry Tolerance of +/- 1/16"
Technical Details
| Model / Series | NGP L-VGLF-MD |
| Manufacturer | National Guard Products |
| Part type | Security door window lite kit |
| Door type | 1-3/4" hollow metal or wood doors (+/- 1/16") |
| Door cutout / order size | 9" x 9" |
| Cut glass size | 7-1/8" x 7-1/8" |
| Exposed glass (visual size) | 6" x 6" |
| Glazing | 1/2" high-impact polycarbonate (Lexan) |
| Frame | 18-gauge cold-rolled steel, mitered and welded corners |
| Frame profile | Low-profile |
| Exterior fasteners | None -- no exposed fasteners on outside of door |
| Finish | Gray primer (GPZ) powder coat |
| Fire rating | Non-rated (factory Standards list is empty; NGP install sheet is L-VGLF-no-rating) |
| Catalog | NGP Lite Kits & Louvers Catalog 2026, page L32 |
| Factory page | ngp.com product-detail productId 3617 |
| Brand | National Guard Products |
| Door Thickness | 1-3/4" Dr Thickness |
| Fire Rated | Non-Rated |
| Visual Size | 6" x 6" |
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