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National Guard Products 150UDKB Polyurethane Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
National Guard Products (NGP) model 150UDKB is a polyurethane perimeter weatherstrip head-and-jamb set finished in Dark Bronze with a black polyurethane (TPV) insert. Engineered for commercial and institutional openings, this screw-applied perimeter seal mounts directly to the frame stop and ships as a complete three-piece set — one head piece and two jamb legs — sized to fit the opening you specify. Five standard opening sizes are available: 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. The 150UDKB carries dual UL certifications for both standard and positive-pressure fire-door applications, making it one of NGP's most specification-ready perimeter seals for hollow metal and wood fire-rated doors.
High-Performance Polyurethane Perimeter Weatherstrip Features
- Aluminum Alloy 6063-T5 Extrusion: A commercial-grade aluminum alloy delivers a rigid, corrosion-resistant carrier that holds its profile over the life of the opening.
- Thermo-Plastic Vulcanizate (TPV) Seal Insert: The black polyurethane TPV insert provides very good abrasion resistance, tensile strength, memory, and UV resistance — critical properties for high-traffic door openings exposed to sunlight and repeated contact.
- Flame-Resistant and Moisture-Resistant: The TPV compound is inherently flame-resistant and moisture-resistant, supporting use in fire-rated and exterior-adjacent applications.
- Wide Temperature Range: Rated from -76°F to 275°F, this weatherstrip maintains its sealing performance in extreme cold climates and high-heat environments such as stairwells and mechanical rooms.
- UL-Certified for Standard Fire Doors (ANSI/UL 10B / CAN/ULC-S104): Certified by UL and compliant 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 for Positive-Pressure Fire Doors (ANSI/UL 10C): Also certified under the positive-pressure standard and compliant with IBC, NFPA 80, and NFPA 252 — covering the same hollow metal (up to 3 hrs.) and wood (up to 90 min.) fire-door categories.
- Recommended for Minimum Air Infiltration: NGP designates the 150U series as a recommended product for achieving minimum air leakage and a tight perimeter seal around commercial doors.
- Slotted Screw Holes for Field Adjustment: Pre-slotted mounting holes allow on-site fine-tuning of the seal position against the door face without re-drilling.
- Stainless Steel Fasteners Included: #6 x 3/4" stainless steel sheet metal screws are furnished with every set, providing corrosion-resistant hardware ready for immediate installation.
- Dark Bronze Finish: The anodize-class Dark Bronze (DKB) finish coordinates with Dark Bronze door frames and hardware for a uniform, architectural appearance.
- Complete Head-and-Jamb Set: Sold as a matched three-piece kit (one head + two jambs) cut to your specified opening size — no field cutting of multiple raw sticks required.
- Made to Order: Each set is fabricated to the opening size you select; allow 10–15 business days production lead time.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 150UDKB |
| Product Type | Polyurethane Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Seal Insert Color | Black |
| Seal Insert Material | Thermo-Plastic Vulcanizate (TPV) Polyurethane |
| Carrier Material | Aluminum Alloy 6063, T5 Temper |
| Profile Section | 7/8" x 5/16" |
| Set Configuration | 1 Head + 2 Jambs (3-piece set) |
| 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 |
| Mounting Method | Screw-applied to frame stop |
| Screw Holes | Slotted for field adjustment |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Temperature Range | -76°F to 275°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| UL Certification – Standard Fire | Certified by UL to ANSI/UL 10B and CAN/ULC-S104; complies with NFPA 80 and NFPA 252 — Hollow Metal up to 3 hrs., Wood up to 90 min. |
| UL Certification – Positive Pressure | Certified by UL to ANSI/UL 10C; complies with IBC, NFPA 80 and NFPA 252 — Hollow Metal up to 3 hrs., Wood up to 90 min. |
| Air Infiltration | NGP-recommended product for minimum air leakage and tight perimeter seal |
| Lead Time | Made to order — approximately 10–15 business days |
Pro-Tip for Perimeter Sealing
The 150UDKB is designed to be surface-applied directly to the frame stop on all three sides of the opening. Because the mounting holes are slotted, installers can shift the seal inward or outward after initial screw placement to achieve even contact across the full door face before final tightening. The furnished #6 x 3/4" stainless steel sheet metal screws resist corrosion in humid or exterior-adjacent conditions, so no substitution of fasteners is needed. When ordering, confirm the exact opening size (width x height) so the head and jamb legs arrive pre-cut — matching a 3'0 x 7'0, 4'0 x 7'0, 6'0 x 7'0, 6'0 x 8'0, or 8'0 x 8'0 opening — and plan for the 10–15 business day made-to-order production window before scheduling 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 |
| Weatherstripping Type | Perimeter Gasketing |
| Housing Size | 7/8" x 5/16" |
| 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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