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National Guard Products 172NA Neoprene Concealed Fastener Perimeter Weatherstrip, Anodized Aluminum — Head-and-Jamb Set
National Guard Products (NGP) model 172NA is a neoprene concealed-fastener perimeter weatherstrip finished in anodized aluminum with a black neoprene insert. Sold as a complete head-and-jamb set (one head piece plus two jamb pieces), the 172NA mounts surface-applied to the door frame stop, where its snap-on aluminum cover conceals all screw heads for a clean, professional appearance. The set ships 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 — and is made to order with a typical lead time of 10–15 business days. UL-certified for fire-rated hollow metal doors up to 3 hours and wood fire doors up to 90 minutes, and ANSI/BHMA A156.22 certified, the 172NA delivers reliable perimeter sealing, smoke and draft control, and air infiltration reduction for commercial and institutional openings.
High-Performance Perimeter Weatherstrip Features
- Concealed Fastener Design: A snap-on aluminum cover conceals screw heads after installation, delivering a finished appearance on the frame stop without exposed hardware.
- Aluminum Alloy 6063-T5 Extrusion: The carrier extrusion is formed from Alloy 6063, T5 temper — a commercial-grade specification widely used in architectural door and frame hardware for strength and corrosion resistance.
- EPDM Neoprene Seal in Polypropylene Matrix: The black seal is a synthetic EPDM rubber set in a polypropylene thermoplastic matrix, providing very good abrasion resistance, tensile strength, and compression memory for long-lasting perimeter contact.
- Broad Temperature Range: Rated from -81°F to 275°F, the seal maintains flexibility and performance across extreme climate conditions, from cold-climate installations to heat-exposed frames.
- Flame-Resistant and Moisture-Resistant: The neoprene compound resists flame spread and moisture ingress, supporting use on fire-rated openings and exterior or vestibule applications.
- Ozone, Sunlight, and Aging Resistance: Good resistance to ozone, UV exposure, and long-term aging helps preserve seal integrity in high-traffic or exterior-facing installations.
- Slotted Screw Holes for Field Adjustment: Slotted mounting holes allow lateral adjustment during installation so installers can fine-tune seal compression against the door face without re-drilling.
- Stainless Steel Fasteners Furnished: #6 x 3/4" stainless steel sheet metal screws are included, resisting corrosion in damp or exterior environments.
- UL-Certified Fire Door Rating: Certified by UL to CAN/ULC-S104 and ANSI/UL10B for hollow metal fire doors up to 3 hours and wood fire doors up to 90 minutes, complying with NFPA 80 and NFPA 252.
- Positive Pressure Fire Certification: Certified by UL to ANSI/UL10C for positive-pressure applications, complying with IBC, NFPA 80, and NFPA 252 for hollow metal doors up to 3 hours and wood doors up to 90 minutes.
- Smoke and Draft Control Gasketing: Certified by UL to ANSI/UL10C and ANSI/UL1784 Category ‘H’, complying 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.
- ANSI/BHMA A156.22 Certified: Meets ANSI/BHMA A156.22 performance tests for heat and cold and is listed in the BHMA Certified Products Directory for door gasketing and edge sealing systems.
- Five Opening Sizes Available: Offered as a complete head-and-jamb set 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, covering standard single and double door openings in commercial applications.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 172NA |
| Product Type | Concealed Fastener Perimeter Weatherstrip — Head-and-Jamb Set |
| Finish | Anodized Aluminum |
| Seal Insert Material | Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix (Black) |
| Extrusion Alloy | Aluminum Alloy 6063, T5 Temper |
| Typical Profile Section | 7/8" x 5/16" |
| 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 |
| Temperature Range | -81°F to 275°F |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for Field Adjustment |
| Installation Surface | Surface Applied to Door Frame Stop |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Ozone / UV / Aging | Good Resistance to Ozone, Sunlight, and Aging |
| UL Fire Certification (Standard Pressure) | CAN/ULC-S104 and ANSI/UL10B — Hollow Metal up to 3 Hrs., Wood up to 90 Min.; NFPA 80, NFPA 252 |
| UL Fire Certification (Positive Pressure) | ANSI/UL10C — Hollow Metal up to 3 Hrs., Wood up to 90 Min.; IBC, NFPA 80, NFPA 252 |
| Smoke & Draft Control | UL Certified to ANSI/UL10C and ANSI/UL1784 Category ‘H’; IBC and NFPA 105 — ‘S’ Labeled Positive Pressure Hollow Metal up to 3 Hrs., Wood up to 90 Min. |
| BHMA Certification | ANSI/BHMA A156.22 — Listed in BHMA Certified Products Directory |
| Availability | Made to Order — 10–15 Business Day Lead Time |
Pro-Tip for Perimeter Sealing
The NGP 172NA is designed for surface application directly to the door frame stop. During installation, use the slotted screw holes to fine-tune the horizontal position of the weatherstrip before final tightening, ensuring consistent seal compression along the full height of each jamb and across the head. The furnished #6 x 3/4" stainless steel sheet metal screws resist corrosion in damp or exterior-facing vestibule conditions. Once the carrier is secured, the snap-on cover presses into place over the screw heads, completing the clean architectural finish. For fire-rated openings, verify that the door and frame assembly carry the appropriate UL labels matching the 172NA’s certified ratings prior to 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 | Aluminum |
| 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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