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National Guard Products 161UDKB Polyurethane Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
The National Guard Products (NGP) 161UDKB is a Dark Bronze finish aluminum polyurethane perimeter weatherstrip head-and-jamb set engineered for commercial and institutional door openings that demand fire-rated, positive-pressure-certified perimeter sealing. Each set ships as one head piece and two jamb pieces and is available 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 — making it suitable for single, double, and oversized commercial door frames. The 7/8" x 5/16" extruded aluminum body (.07" wall, Alloy 6063-T5) is surface-applied to the frame stop, and the black Polyurethane (TPV) insert compresses uniformly against the door face to minimize air infiltration and block the passage of smoke, flame, and weather. This is a made-to-order product with a lead time of approximately 10–15 business days.
High-Performance Perimeter Weatherstrip Features
- UL-Certified Fire Rating (Standard Pressure): Certified by UL to CAN/ULC-S104 and ANSI/UL10B, complying 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.
- UL-Certified Positive Pressure Fire Rating: Certified by UL to ANSI/UL10C, complying with IBC, NFPA 80, and NFPA 252 for hollow metal fire doors up to 3 hours and wood fire doors up to 90 minutes — a critical requirement for life-safety stairwell and corridor doors.
- Thermo-Plastic Vulcanizate (TPV) Insert: The black polyurethane TPV seal delivers very good abrasion resistance, tensile strength, memory, and UV resistance, maintaining consistent contact pressure across the life of the door.
- Flame- and Moisture-Resistant Sealing: The TPV insert is flame-resistant and moisture-resistant, suited for exterior-rated openings and interior fire-rated assemblies alike.
- Wide Operating Temperature Range: Rated from -76°F to 275°F, ensuring reliable performance in cold-storage, industrial, and high-heat environments.
- Air Infiltration Control: NGP recommends the 161U series as a product for minimum air leakage and a tight perimeter seal — an important factor for energy code compliance and building envelope performance.
- Military-Spec Aluminum Construction: Extruded from Aluminum Alloy 6063, T5 Temper at .07" wall thickness to meet military specification standards for durability and dimensional stability.
- Slotted Screw Holes for Field Adjustment: Screw holes are slotted to allow lateral positioning adjustment during installation, ensuring optimal seal compression without rework.
- Stainless Steel Fasteners Furnished: #6 x 3/4" stainless steel sheet metal screws are included, providing corrosion resistance for both interior and exterior frame applications.
- Dark Bronze Finish: The Dark Bronze (DKB) anodized-look aluminum extrusion coordinates with dark bronze door frames and hardware for a cohesive architectural appearance.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 161UDKB |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Insert Material | Black Polyurethane / Thermo-Plastic Vulcanizate (TPV) |
| Extrusion Alloy | Aluminum Alloy 6063, T5 Temper |
| Profile Section | 7/8" x 5/16" (.07" wall aluminum) |
| Set Contents | 1 Head piece + 2 Jamb pieces |
| 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 |
| Application Method | Surface applied to the frame stop |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| Temperature Range | -76°F to 275°F |
| Flame Resistance | Yes |
| Moisture Resistance | Yes |
| UV Resistance | Very Good |
| Fire Rating – Standard Pressure | UL Certified to CAN/ULC-S104 & ANSI/UL10B; NFPA 80 & NFPA 252 — Hollow Metal up to 3 Hrs., Wood up to 90 Min. |
| Fire Rating – Positive Pressure | UL Certified to ANSI/UL10C; IBC, NFPA 80 & NFPA 252 — Hollow Metal up to 3 Hrs., Wood up to 90 Min. |
| Military Spec Compliance | .07" Aluminum for Military Specs |
| Stock Status | Made to Order |
| Lead Time | Approximately 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The 161UDKB installs by surface application directly to the frame stop — no routing or mortising required. The slotted screw holes allow you to shift the extrusion inward or outward before final tightening, so you can dial in consistent compression of the TPV insert against the door face on both jambs and the head. The #6 x 3/4" stainless steel sheet metal screws furnished with the set are sized for standard hollow metal and wood frame stops. For fire-rated assemblies, verify that your installation follows the requirements of the UL listing and the Authority Having Jurisdiction (AHJ) before finalizing the door schedule.
| 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 |
| Weatherstripping Type | Perimeter Gasketing |
| Housing Size | 7/8" x 5/16" (.07" aluminum) |
| Insert Color | Black |
| Fasteners | #6 x 3/4" Stainless Steel Sheet Metal Screws Furnished |
| Fire Rated | Fire Rated |
| Insert Material | Polyurethane |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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