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National Guard Products 165SA Silicone Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
National Guard Products (NGP) 165SA is a silicone sponge perimeter weatherstrip head-and-jamb set in an anodized aluminum finish with a black closed-cell microcellular silicone sponge insert. Each set includes one head piece and two jamb pieces, screw-applied directly to the frame stop, 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. The 165SA delivers a continuous, airtight perimeter seal on both hollow metal and wood fire-rated door openings, and carries UL certifications for standard fire, positive pressure, and smoke-and-draft-control applications — making it a go-to specification-grade choice for commercial, institutional, and high-security facilities wherever a durable, fire-rated perimeter gasket is required.
National Guard Products 165SA High-Performance Weatherstrip Features
- Patent-Pending Microcellular Silicone Sponge: NGP's closed-cell sponge design provides excellent flexibility and memory, conforming tightly to the door perimeter and recovering to its original shape cycle after cycle.
- Extreme-Temperature Flexibility: The silicone insert remains flexible across a temperature range of -81°F to 300°F, maintaining a consistent seal under the most demanding climate and mechanical conditions.
- Flame-Resistant and Moisture-Resistant: The closed-cell silicone construction resists flame spread and blocks moisture infiltration, making it suitable for exterior and interior commercial openings alike.
- Outstanding UV, Ozone, and Aging Resistance: Silicone's inherent material stability means the 165SA retains its sealing performance long-term without cracking, hardening, or shrinking due to environmental exposure.
- FM200 and Halon Compatible: Specifically recommended for areas equipped with FM200 or Halon fire suppression systems, where gasket material compatibility with fire-suppression agents is a critical specification requirement.
- UL-Certified for Fire Doors (Standard and Positive Pressure): Certified by UL to CAN/ULC-S104 and ANSI/UL10B for hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes; also Certified by UL to ANSI/UL10C (Positive Pressure), complying with IBC, NFPA 80, and NFPA 252 for the same door types and ratings.
- Smoke and Draft Control Gasketing: UL-Certified to ANSI/UL10C and ANSI/UL1784 Category 'H'; complies with IBC and NFPA 105 for '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: Certified for door gasketing and edge sealing systems performance, including heat and cold performance tests, and listed in the BHMA Certified Products Directory.
- Aluminum Alloy Carrier for Long-Term Durability: The extruded carrier is Aluminum Alloy 6063, T5 Temper — a commercial-grade specification that resists corrosion and holds dimensional stability across years of door operation.
- Slotted Screw Holes for Easy Field Adjustment: Pre-slotted screw holes allow installers to fine-tune the position of the weatherstrip along the frame stop for an optimized seal without redrilling.
- Stainless Steel Fasteners Included: #6 x 3/4" stainless steel sheet metal screws are furnished with each set, resisting corrosion in high-humidity and exterior environments.
- Made to Order: Each head-and-jamb set is fabricated to the specified opening size; allow 10–15 business days for production and shipment.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 165SA |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Anodized Aluminum |
| Insert / Seal Material | Patent-Pending Microcellular Silicone Sponge (Black), Closed Cell |
| Carrier Material | Aluminum Alloy 6063, T5 Temper |
| Seal Polymer Type | Synthetic Rubber Polymer – Closed Cell Sponge |
| Profile Section | 15/16" x 5/16" |
| Set Configuration | 1 Head + 2 Jambs (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 |
| Application Method | Screw-applied to the frame stop |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| Temperature Range | -81°F to 300°F; remains flexible at extreme temperatures |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Environmental Resistance | Excellent resistance to ozone, UV, and aging |
| Fire Suppression Compatibility | Recommended for FM200 and Halon fire suppression system environments |
| UL Certifications | Certified by UL to CAN/ULC-S104 and ANSI/UL10B; Certified by UL to ANSI/UL10C (Positive Pressure); Certified by UL to ANSI/UL10C and ANSI/UL1784 Category 'H' (Smoke & Draft Control) |
| Code Compliance | Complies with NFPA 80, NFPA 252, NFPA 105, and IBC |
| Fire Rating – Hollow Metal Doors | Up to 3 Hours |
| Fire Rating – Wood Doors | Up to 90 Minutes |
| BHMA/ANSI Certification | ANSI/BHMA A156.22 Certified; listed in the BHMA Certified Products Directory; BHMA Certified to ANSI/BHMA A156.22 Performance Tests for Heat and Cold |
| Availability | Made to Order |
| Lead Time | 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The NGP 165SA is surface-applied directly to the frame stop — no routing or mortising required. The slotted screw holes allow you to shift the strip inward or outward after initial installation to dial in compression against the door face without redrilling the frame. Use the furnished #6 x 3/4" stainless steel sheet metal screws to resist corrosion in high-humidity or exterior vestibule applications. For a complete perimeter seal on a fire-rated opening, pair the 165SA head-and-jamb set with a compatible NGP door bottom or automatic door bottom at the threshold to maintain the door's fire, smoke, and draft listing across the full perimeter.
| 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 | 15/16" x 5/16" |
| Insert Color | Black |
| Fasteners | #6 x 3/4" Stainless Steel Sheet Metal Screws Furnished |
| Fire Rated | Fire Rated |
| Insert Material | Silicone |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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