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National Guard Products 172NDKB Neoprene Concealed Fastener Perimeter Weatherstrip – Dark Bronze Head-and-Jamb Set
The National Guard Products (NGP) 172NDKB is a concealed-fastener perimeter weatherstrip head-and-jamb set finished in Dark Bronze with a black neoprene (EPDM/polypropylene thermoplastic matrix) insert. Engineered for commercial and institutional door openings, each set includes one head piece and two jamb pieces, factory cut to your selected opening size — available in 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 configurations. The 172NDKB installs surface-applied to the frame stop, sealing the door perimeter against air infiltration, moisture, smoke, and drafts while meeting rigorous UL fire door certifications. Its snap-on cover rail conceals all screw heads for a polished, professional appearance that complements Dark Bronze door hardware and hollow metal or wood fire-rated frames.
High-Performance Weatherstrip Features
- UL-Certified Fire Door Compliance: Certified by UL to CAN/ULC-S104 and ANSI/UL 10B; 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 Fire Rating: Certified by UL to ANSI/UL 10C; complies with IBC, NFPA 80, and NFPA 252 for positive-pressure hollow metal fire doors up to 3 hours and wood fire doors up to 90 minutes.
- Smoke & Draft Control Gasketing: Certified by UL to ANSI/UL 10C and ANSI/UL 1784 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.
- BHMA Certified Performance: Meets ANSI/BHMA A156.22 for door gasketing and edge sealing systems, including performance tests for heat and cold; listed in the BHMA Certified Products Directory.
- Air Infiltration Control: Recommended for minimum air leakage, delivering a tight perimeter seal that supports energy efficiency and interior comfort in high-traffic commercial openings.
- Concealed Fastener Design: A snap-on aluminum cover rail conceals all screw heads after installation, providing a clean, finished appearance with no exposed hardware on the face of the frame stop.
- Slotted Screw Holes for Easy Adjustment: Pre-slotted mounting holes allow field adjustment of the weatherstrip position on the frame stop, simplifying alignment to achieve a consistent seal around the full door perimeter.
- Furnished Stainless Steel Screws: Each set ships with #6 x 3/4" stainless steel sheet metal screws — no separate fastener purchase required.
- Flame- and Moisture-Resistant Seal Material: The black neoprene insert is formulated in a synthetic EPDM rubber and polypropylene thermoplastic matrix, delivering flame resistance, moisture resistance, and very good abrasion resistance, tensile strength, and memory.
- Extreme Temperature Performance: The neoprene seal performs across a rated temperature range of -81°F to 275°F, making it suitable for cold-storage, exterior, and high-heat vestibule applications.
- Ozone, Sunlight & Aging Resistance: Good resistance to ozone, UV exposure, and long-term aging extends the service life of the seal in demanding exterior or partially exposed installations.
- Made-to-Order Precision Cutting: Sets are cut to your specified opening size — not stocked in generic lengths — ensuring accurate fit and minimizing field trimming. Allow 10–15 business days lead time.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 172NDKB |
| Product Type | Concealed Fastener Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Seal / Insert Material | Black Neoprene — Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix |
| Frame / Body Material | Aluminum Alloy 6063, T5 Temper |
| Profile Size (typical section) | 7/8" x 5/16" |
| Set Configuration | 1 Head + 2 Jambs (full perimeter head-and-jamb 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 |
| Installation Method | Surface-applied to the frame stop; screw-fastened with snap-on cover to conceal heads |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws (included) |
| Screw Holes | Slotted for field adjustment |
| Temperature Range | -81°F to 275°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Abrasion / Tensile / Memory | Very Good |
| Ozone / Sunlight / Aging Resistance | Good |
| UL Fire Door Certification (Standard Pressure) | Certified to CAN/ULC-S104 & ANSI/UL 10B; complies with NFPA 80 & NFPA 252 — Hollow Metal up to 3 Hr., Wood up to 90 Min. |
| UL Fire Door Certification (Positive Pressure) | Certified to ANSI/UL 10C; complies with IBC, NFPA 80 & NFPA 252 — Hollow Metal up to 3 Hr., Wood up to 90 Min. |
| Smoke & Draft Control | Certified to ANSI/UL 10C & ANSI/UL 1784 Category 'H'; complies with IBC & NFPA 105 — 'S'-labeled Positive Pressure Hollow Metal up to 3 Hr., Wood up to 90 Min. |
| BHMA Certification | ANSI/BHMA A156.22; listed in BHMA Certified Products Directory |
| Availability | Made to Order — Allow 10–15 Business Days Lead Time |
Pro-Tip for Perimeter Sealing
The NGP 172NDKB is designed to be applied directly to the frame stop on the pull side of the door. Slotted screw holes in the aluminum extrusion allow you to shift the weatherstrip slightly toward or away from the door face before final tightening, letting you fine-tune neoprene compression for a consistent seal at the head and both jambs. Once the body is set, press the snap-on cover into place to hide all screw heads — no caulking or cap screws required for a finished look. Because this is a made-to-order set cut to your specified opening size, verify rough opening dimensions carefully before ordering to ensure the head and jamb pieces arrive ready to install without field cutting.
| 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 | 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 | Neoprene |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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