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National Guard Products 120SA Silicone Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
National Guard Products (NGP) model 120SA is a screw-applied perimeter weatherstrip head-and-jamb set featuring a patent-pending microcellular silicone sponge seal in an anodized aluminum retainer. Sold as a complete set — one head piece and two jamb pieces — the 120SA is available in five 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. Engineered for demanding commercial and institutional applications, the 120SA delivers certified fire door, positive-pressure, and smoke-and-draft-control performance while maintaining an air-tight perimeter seal across a broad temperature range.
High-Performance Silicone Sponge Weatherstrip Features
- UL-Certified Fire Door Performance: Certified by UL to CAN/ULC-S104 and ANSI/UL 10B, complying 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, complying with IBC, NFPA 80, and NFPA 252 for hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes.
- Smoke & Draft Control Gasketing: Certified by UL to ANSI/UL 10C and ANSI/UL 1784 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: Gasketing is certified to the American National Standard for Door Gasketing and Edge Sealing Systems and listed in the BHMA Certified Products Directory, including performance tests for heat and cold.
- Patent-Pending Microcellular Silicone Sponge: Closed-cell synthetic rubber polymer construction provides excellent flexibility and memory, ensuring the seal rebounds reliably cycle after cycle.
- Extreme Temperature Performance: Rated from -81°F to 300°F, the silicone sponge remains flexible and effective in severe cold or high-heat environments where standard vinyl or EPDM seals may fail.
- Flame-Resistant & Moisture-Resistant: Inherent material properties make the 120SA suitable for fire-rated openings and high-humidity environments without seal degradation.
- Ozone, UV & Aging Resistance: Excellent resistance to ozone, UV radiation, and long-term aging protects the seal in exterior or sun-exposed applications.
- FM200 & Halon Compatible: Specifically recommended for areas utilizing FM200 or Halon fire suppression systems, where chemical exposure would degrade lesser seal materials.
- Aluminum Alloy 6063-T5 Retainer: The extruded aluminum retainer provides a rigid, corrosion-resistant carrier that maintains alignment along the full height and width of the opening.
- Anodized Aluminum Finish: Durable anodized finish integrates cleanly with standard commercial hollow metal and aluminum door frames.
- Furnished Stainless Steel Screws: #6 x 3/4" stainless steel sheet metal screws are included; slotted screw holes allow field adjustment for precise seal compression without additional hardware.
- Five Opening Sizes Available: Ordered 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, or 8'0 x 8'0 to match single, double, and oversized commercial door openings.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 120SA |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set (1 head + 2 jambs) |
| Seal Material | Patent-Pending Microcellular Silicone Sponge – Closed Cell; Black |
| Retainer Material | Aluminum Alloy 6063, T5 Temper |
| Finish | Anodized Aluminum |
| Typical Section Profile | 5/8" x 3/16" |
| 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 |
| 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 |
| UL Fire Certification (Standard Pressure) | CAN/ULC-S104 and ANSI/UL 10B; NFPA 80 & NFPA 252 – Hollow Metal up to 3 Hrs., Wood up to 90 Min. |
| UL Fire Certification (Positive Pressure) | ANSI/UL 10C; IBC, NFPA 80 & NFPA 252 – Hollow Metal up to 3 Hrs., Wood up to 90 Min. |
| Smoke & Draft Control | UL Certified to ANSI/UL 10C and ANSI/UL 1784 Category 'H'; IBC & NFPA 105 – 'S' Labeled Positive Pressure Doors, HM up to 3 Hrs., Wood up to 90 Min. |
| BHMA Certification | ANSI/BHMA A156.22 (Heat and Cold Performance); Listed in BHMA Certified Products Directory |
| Fire Suppression Compatibility | Recommended for FM200 and Halon fire suppression environments |
| Properties | Flame-Resistant, Moisture-Resistant, Ozone-Resistant, UV-Resistant |
| Availability | Made to Order – Lead time approximately 10–15 business days |
Pro-Tip for Perimeter Sealing
The NGP 120SA is surface-applied directly to the frame stop, making it compatible with standard hollow metal and aluminum commercial frames without mortising or routing. The slotted screw holes in the aluminum retainer allow installers to shift the strip laterally for optimal seal compression before final tightening with the furnished #6 x 3/4" stainless steel sheet metal screws. Because the set is cut to the specific opening size ordered, confirm your rough opening dimensions — head width and jamb height — before placing your order. For double-door openings (6'0 or 8'0 wide), verify that your astragal and meeting-stile seals are coordinated with the head-and-jamb set to achieve a fully continuous perimeter seal meeting your project's fire and smoke requirements.
| 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 | 5/8" x 3/16" |
| 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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