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National Guard Products 107NDKB Adjustable Neoprene Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
National Guard Products (NGP) model 107NDKB is a Dark Bronze aluminum adjustable neoprene perimeter weatherstrip head-and-jamb set designed to create a tight, fire-rated seal around the full perimeter of commercial door openings. Each set includes one head piece and two jamb pieces, sized to fit openings from 3'0 x 7'0 through 8'0 x 8'0, making this a versatile solution for single and double commercial door frames. The Dark Bronze anodized aluminum extrusion is formed from Alloy 6063, T5 Temper and fitted with a black closed-cell advanced elastomeric foam insert — a Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix — engineered to deliver reliable air infiltration control, smoke and draft resistance, and UL-certified fire door compliance in demanding commercial and institutional environments. This item is made to order with a lead time of approximately 10–15 business days.
Features of the NGP 107NDKB Perimeter Weatherstrip
- UL-Certified Fire Door Rating: Certified by UL to CAN/ULC-S104 and ANSI/UL10B; complies with NFPA 80 and NFPA 252 for Hollow Metal fire doors rated up to 3 hours and Wood fire doors rated up to 90 minutes.
- Positive Pressure Certified: Certified by UL to ANSI/UL10C; complies with IBC, NFPA 80, and NFPA 252 for Hollow Metal fire doors rated up to 3 hours and Wood fire doors rated up to 90 minutes.
- Smoke and Draft Control Gasketing: Certified by UL to ANSI/UL10C and ANSI/UL1784 Category 'H'; complies with IBC and NFPA 105 for use on 'S' labeled Positive Pressure Hollow Metal fire doors up to 3 hours and Wood fire doors up to 90 minutes.
- Advanced Elastomeric Insert: Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix Closed Cell foam delivers very good abrasion resistance, tensile strength, and memory — maintaining compression seal performance over repeated door cycles.
- Extreme Temperature Range: Rated from -81°F to 275°F, suitable for climates with severe cold or heat exposure and for fire door applications requiring high-temperature resistance.
- Flame- and Moisture-Resistant: The elastomeric foam insert is both flame-resistant and moisture-resistant, reducing degradation from humidity, rain infiltration, and incidental water exposure.
- Ozone, Sunlight, and Aging Resistance: Good resistance to ozone, UV sunlight, and long-term aging helps maintain seal integrity and appearance in exterior or high-UV applications.
- On-Site Adjustability: Adjustment screws on 10-inch centers allow the seal to be repositioned within a 1/4-inch adjustment range without moving the mounting location, simplifying installation and future fine-tuning.
- Stainless Steel Fasteners Furnished: Each set ships with #6 x 3/4" or #6 x 1-1/2" Stainless Steel SMS screws included, eliminating the need to source separate hardware.
- Head-and-Jamb Set Configuration: Sold as a complete set (1 head + 2 jambs) in five standard opening sizes — 3'0 x 7'0, 4'0 x 7'0, 6'0 x 7'0, 6'0 x 8'0, and 8'0 x 8'0 — to match single and double commercial door openings.
- Dark Bronze Aluminum Finish: The Dark Bronze finish coordinates with architectural door hardware and hollow metal frames in bronze color families, providing a professional, consistent appearance.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 107NDKB |
| Product Type | Adjustable Neoprene Perimeter Weatherstrip – Head-and-Jamb Set |
| Finish | Dark Bronze |
| Insert Color | Black |
| Insert Material | Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix Closed Cell Advanced Elastomeric Foam |
| Extrusion Material | Aluminum Alloy 6063, T5 Temper |
| Section Profile | 1-1/4" x 13/16" |
| Adjustment Range | 1/4" |
| Adjustment Screw Spacing | 10" on center |
| Fasteners Furnished | #6 x 3/4" or #6 x 1-1/2" Stainless Steel SMS (included) |
| Temperature Range | -81°F to 275°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Environmental Resistance | Good resistance to ozone, sunlight, and aging |
| Available Opening Sizes | 3'0 x 7'0 | 4'0 x 7'0 | 6'0 x 7'0 | 6'0 x 8'0 | 8'0 x 8'0 |
| Set Contents | 1 Head piece + 2 Jamb pieces |
| UL Certifications | CAN/ULC-S104 | ANSI/UL10B | ANSI/UL10C | ANSI/UL1784 Category 'H' |
| Code Compliance | NFPA 80 | NFPA 105 | NFPA 252 | IBC |
| Fire Door Rating – Hollow Metal | Up to 3 Hours |
| Fire Door Rating – Wood | Up to 90 Minutes |
| Smoke & Draft Control | Yes – UL1784 Category 'H', Positive Pressure 'S' Label Rated |
| Stocking Status | Made to Order |
| Lead Time | Approximately 10–15 business days |
Pro Tip: Installation Notes
The 107NDKB's adjustment screws are spaced on 10-inch centers, allowing installers to fine-tune the seal compression up to 1/4 inch without relocating the mounting holes in the frame — a significant time saver when aligning the weatherstrip to an existing hollow metal or wood frame. Stainless Steel SMS screws are furnished with each set, so no additional fasteners need to be procured separately. Confirm door frame stop dimensions against the 1-1/4" x 13/16" section profile prior to ordering to ensure proper fit and seal contact.
| Gasketing Set Size | 3'0 x 7'0 Set or 4'0 x 7'0 Set or 6'0 x 7'0 Set or 6'0 x 8'0 Set or 8'0 x 8'0 Set |
| Brand | National Guard Products |
| Housing Finish | Dark Bronze |
| Smoke Rated | Smoke Rated |
| Weatherstripping Type | Perimeter Gasketing |
| Housing Size | 1-1/4" x 13/16" (1/4" adj) |
| Insert Color | Black |
| Fasteners | #6 x 3/4" Stainless Steel SMS |
| Fire Rated | Fire Rated |
| Insert Material | Neoprene |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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