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National Guard Products 110SA Silicone Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
The National Guard Products (NGP) 110SA is a silicone sponge perimeter weatherstrip head-and-jamb set finished in anodized aluminum with a black closed-cell microcellular silicone sponge insert. Designed for screw-applied installation directly to the door frame stop, the 110SA delivers a tight, continuous seal around the full perimeter of commercial door openings. Each set ships as one head piece and two jamb pieces sized to the specified opening, making it a complete perimeter solution for hollow metal and wood fire doors. The 110SA carries UL fire-door listings for both standard and positive-pressure conditions and is BHMA Certified to ANSI/BHMA A156.22 — making it one of the most specification-ready perimeter weatherstrip products available for commercial, institutional, and high-performance building applications. Sold as a made-to-order set in five standard opening sizes; please allow 10–15 business days for production.
High-Performance Silicone Sponge Weatherstrip Features
- Patent-Pending Microcellular Silicone Insert: The black closed-cell sponge seal delivers outstanding flexibility and memory, returning to shape after repeated door cycles to maintain a consistent, draft-free perimeter seal.
- Extreme Temperature Performance: Rated from −81°F to 300°F, the silicone insert remains flexible across climates that would crack or stiffen conventional vinyl or neoprene gaskets.
- Flame- and Moisture-Resistant Construction: The silicone sponge is inherently flame-resistant and moisture-resistant, supporting use in demanding environments including stairwells, mechanical rooms, and exterior openings.
- Ozone, UV, and Aging Resistance: Silicone’s molecular stability protects the insert against UV degradation and ozone attack, extending service life in exterior and high-exposure applications.
- FM200 and Halon Fire-Suppression Compatibility: Specifically recommended for areas protected by FM200 or Halon clean-agent fire-suppression systems, where gasket material compatibility is a critical design requirement.
- UL-Certified Fire and Positive-Pressure Listings: Certified by UL to CAN/ULC-S104, ANSI/UL10B, and ANSI/UL10C; complies with NFPA 80, NFPA 252, and IBC for hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes.
- Smoke and Draft Control Gasketing: Certified by UL to ANSI/UL10C and ANSI/UL1784 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.
- ANSI/BHMA A156.22 Certified: Independently certified to the American National Standard for Door Gasketing and Edge Sealing Systems and listed in the BHMA Certified Products Directory, simplifying specification compliance and code submittals.
- Slotted Screw Holes for Field Adjustment: Screw holes are slotted so installers can fine-tune gasket position for a precise, even seal without drilling new holes.
- Stainless Steel Fasteners Included: #6 x 3/4 in. stainless steel sheet metal screws are furnished with every set, ensuring corrosion-resistant attachment right out of the box.
- 6063-T5 Aluminum Alloy Carrier: The anodized aluminum retainer is extruded from Alloy 6063, T5 Temper — a specification-grade alloy prized for consistent finish quality and long-term corrosion resistance.
- Complete Head-and-Jamb Set: One head piece and two jamb pieces are cut to the specified opening size and shipped together, eliminating field measuring and cutting of individual lengths.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 110SA |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set, Screw Applied |
| Finish | Anodized Aluminum |
| Insert Material | Patent-Pending Microcellular Silicone Sponge (Closed Cell), Black |
| Carrier Material | Aluminum Alloy 6063, T5 Temper |
| Typical Section Profile | 1 in. x 1/2 in. |
| Set Configuration | 1 Head + 2 Jambs (complete perimeter 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 Surface | Frame stop (screw applied) |
| Compatible Door Types | Hollow Metal Fire Doors (up to 3 hours); Wood Fire Doors (up to 90 minutes) |
| Temperature Range | −81°F to 300°F |
| Fire-Suppression Compatibility | Recommended for FM200 and Halon fire-suppression system areas |
| UL Fire Listings | Certified by UL to CAN/ULC-S104, ANSI/UL10B (standard), and ANSI/UL10C (positive pressure); complies with NFPA 80, NFPA 252, and IBC |
| Smoke & Draft Control | Certified by UL to ANSI/UL10C and ANSI/UL1784 Category ‘H’; complies with IBC and NFPA 105; for ‘S’-labeled positive-pressure hollow metal doors (up to 3 hrs.) and wood doors (up to 90 min.) |
| BHMA Certification | ANSI/BHMA A156.22; listed in BHMA Certified Products Directory; heat and cold performance tested |
| Fasteners Furnished | #6 x 3/4 in. Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| Availability | Made to Order — 10 to 15 business day lead time |
Pro-Tip for Perimeter Sealing
The NGP 110SA mounts directly to the frame stop surface using the furnished #6 x 3/4 in. stainless steel sheet metal screws. Because the screw holes are slotted, you can shift the retainer slightly inward or outward after a preliminary snug fit to dial in contact pressure against the door face before fully tightening. This adjustability is especially helpful when hanging doors in frames that have minor plumb or square variations — a common field condition in renovation and retrofit projects. For fire-rated openings, always verify final installation against the requirements of NFPA 80 and the applicable UL listing to ensure the assembly qualifies for the posted fire rating.
| 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 | 1" x 1/2" |
| 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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