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National Guard Products 107SDKB Adjustable Silicone Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
The National Guard Products (NGP) 107SDKB Adjustable Aluminum Perimeter Weatherstrip is a professional-grade, Dark Bronze finish head-and-jamb sealing system engineered for commercial and institutional door openings. Each set ships as one head piece plus two jamb pieces, sized to fit five standard opening widths and heights — 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 — making it a versatile solution for single and pairs of hollow metal or wood fire doors. The extruded Aluminum Alloy 6063-T5 frame carries a black silicone seal insert that delivers exceptional flexibility, memory, and resistance to extreme temperatures, UV exposure, ozone, and moisture. This product is UL-Certified for fire-rated door assemblies up to 3 hours on hollow metal and up to 90 minutes on wood, and carries Smoke and Draft Control Category 'H' certification under ANSI/UL1784 — meeting the most stringent requirements of NFPA 80, NFPA 105, NFPA 252, and the International Building Code. Because this is a made-to-order item, please allow approximately 10–15 business days for production before shipment.
Key Features of the NGP 107SDKB Perimeter Weatherstrip
- Aluminum Alloy 6063-T5 Extrusion: Heavy-duty, corrosion-resistant frame profile measuring 1-1/4" x 13/16" provides a rigid mounting base suited to high-traffic commercial openings.
- Black Silicone Seal Insert: Synthetic rubber polymer silicone delivers excellent flexibility and memory, maintaining a consistent perimeter seal without permanent deformation over time.
- Extreme Temperature Performance: Rated from -81°F to 300°F, the silicone insert remains pliable and effective across the full range of climates and building environments.
- Flame-Resistant and Moisture-Resistant: The seal material resists ignition and moisture intrusion, supporting the fire-door assembly's rated performance and long service life.
- UV and Ozone Resistance: Excellent resistance to UV radiation, ozone, and aging ensures the silicone seal maintains its sealing properties in both interior and exterior-adjacent applications.
- FM200 and Halon Compatible: Specifically recommended for areas equipped with FM200 or Halon gaseous fire suppression systems, where seal material compatibility is critical.
- Adjustable 1/4" Range – Screws on 10" Centers: Adjustment screws spaced on 10-inch centers allow field fine-tuning of seal compression across the full 1/4-inch adjustment range without repositioning the mounting location — a significant time saver during installation and post-installation alignment.
- Stainless Steel Fasteners Furnished: #6 x 3/4" and #6 x 1-1/2" stainless steel sheet metal screws are included, resisting corrosion at the fastener points for a lasting installation.
- UL Fire-Door Certification (Standard and Positive Pressure): Certified by UL to CAN/ULC-S104, ANSI/UL10B, and ANSI/UL10C; 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.
- Smoke and Draft Control – Category 'H': 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.
- Air Infiltration Control: Recommended by NGP as a minimum-air-leakage solution for a tight perimeter seal around commercial door openings, supporting energy efficiency and occupant comfort.
- Dark Bronze Finish: The anodized Dark Bronze (DKB) aluminum frame coordinates with standard commercial door hardware finishes for a polished, professional appearance.
- Head-and-Jamb Set – Five Opening Sizes: Sold as a complete set (1 head + 2 jambs) in five standard configurations: 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.
- Made to Order: Produced to your specified opening size with a lead time of approximately 10–15 business days.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 107SDKB |
| Product Type | Adjustable Perimeter Weatherstrip – Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Frame Material | Aluminum Alloy 6063, T5 Temper |
| Seal Material | Silicone (Synthetic Rubber Polymer) – Black |
| Profile Section | 1-1/4" x 13/16" |
| Adjustment Range | 1/4" (adjustment screws on 10" centers) |
| Temperature Range | -81°F to 300°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| UV / Ozone Resistance | Excellent resistance to UV, ozone, and aging |
| Fire Suppression Compatibility | Recommended for FM200 and Halon fire suppression systems |
| Fasteners Furnished | #6 x 3/4" and #6 x 1-1/2" Stainless Steel SMS |
| Set Contents | 1 Head + 2 Jambs |
| 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 |
| UL Certifications | CAN/ULC-S104, ANSI/UL10B (Standard Pressure); ANSI/UL10C (Positive Pressure); ANSI/UL1784 Category 'H' (Smoke and Draft Control) |
| 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 Label | 'S' Labeled Positive Pressure Hollow Metal Fire Doors |
| Availability | Made to Order – approximately 10–15 business day lead time |
Pro Installation Tip
The 107SDKB's adjustment screws are spaced on 10-inch centers, providing a 1/4-inch range of in-place adjustment after mounting. This means installers can fine-tune seal compression along the full height of both jambs and across the head without pulling fasteners or relocating the mounting strip — a practical advantage on hollow metal frames where precise alignment of the door stop and perimeter seal is critical to achieving the product's certified fire, smoke, and air infiltration performance. Both furnished screw lengths (#6 x 3/4" and #6 x 1-1/2") are stainless steel, providing corrosion resistance at fastener locations for the life of the installation.
| 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 | Silicone |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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