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National Guard Products 122NA Neoprene Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
The National Guard Products (NGP) 122NA is a neoprene sponge perimeter weatherstrip head-and-jamb set finished in Anodized Aluminum with a patent-pending Microcellular EPDM insert. Sold as a complete three-piece set — one head piece and two jamb pieces — it is 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 122NA is engineered to deliver a tight, continuous air and smoke seal around the full perimeter of commercial hollow metal and wood fire-rated door openings, and carries UL certifications for both standard and positive-pressure fire door applications. Because it is made to order, please allow 10–15 business days for production.
High-Performance Perimeter Weatherstrip Features
- Aluminum Alloy Body: Extruded from 6063-T5 aluminum alloy for a rigid, corrosion-resistant carrier that holds precise alignment against the frame stop.
- Patent-Pending Microcellular EPDM Seal: The Synthetic EPDM Rubber in a Polypropylene Thermoplastic Matrix Closed Cell Advanced Elastomeric Foam insert delivers superior memory and compression recovery, maintaining a consistent seal over years of door cycling.
- Wide Temperature Range: Rated from -50°F to 275°F, making the 122NA suitable for exterior openings in extreme climates as well as high-heat fire door applications.
- Flame- and Moisture-Resistant: The flame-resistant and moisture-resistant EPDM foam resists degradation in demanding commercial environments.
- Ozone, Sunlight, and Aging Resistance: Good resistance to ozone, UV sunlight, and long-term aging reduces maintenance cycles and extends the useful life of the seal.
- Very Good Abrasion Resistance and Tensile Strength: The closed-cell elastomeric foam withstands repeated door contact without cracking, tearing, or permanent deformation.
- UL Fire Door Certified – Standard Pressure: CERTIFIED by UL to CAN/ULC-S104 and ANSI/UL10B; 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.
- UL Fire Door Certified – Positive Pressure: CERTIFIED by UL to ANSI/UL10C; complies with IBC, NFPA 80, and NFPA 252 for hollow metal fire doors up to 3 hours and wood fire doors 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 rated up to 3 hours and wood fire doors rated up to 90 minutes.
- BHMA Certified Performance: Certified to ANSI/BHMA A156.22 for Heat and Cold performance tests and listed in the BHMA Certified Products Directory.
- Stainless Steel Fasteners Included: #6 x 3/4" stainless steel sheet metal screws are furnished with every set — no separate fastener purchase required.
- Slotted Screw Holes for Field Adjustment: Slotted screw holes allow installers to fine-tune the position of each section for an optimal compression fit before final tightening.
- Black Seal Color: The black EPDM insert provides a clean, professional contrast against the anodized aluminum retainer on most standard frame finishes.
- Made to Order: Each set is fabricated to the specified opening size; allow 10–15 business days for production and shipping.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 122NA |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Anodized Aluminum |
| Seal Insert Material | Patent-Pending Microcellular EPDM – Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix Closed Cell Advanced Elastomeric Foam |
| Seal Insert Color | Black |
| Retainer Material | Aluminum Alloy 6063, T5 Temper |
| Profile Section Size | 15/16" x 5/16" |
| Application | Screw applied to the frame stop |
| Set Composition | 1 head piece + 2 jamb pieces |
| 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 | -50°F to 275°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Environmental Resistance | Good resistance to ozone, sunlight, and aging |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| UL Certification – Standard Pressure | CAN/ULC-S104 and ANSI/UL10B; complies with NFPA 80 and NFPA 252 – Hollow Metal up to 3 hrs., Wood up to 90 min. |
| UL Certification – Positive Pressure | ANSI/UL10C; complies with IBC, NFPA 80 and NFPA 252 – Hollow Metal up to 3 hrs., Wood up to 90 min. |
| Smoke & Draft Control Certification | UL to ANSI/UL10C and ANSI/UL1784 Category 'H'; complies with 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 – Heat and Cold Performance Tests; listed in BHMA Certified Products Directory |
| Availability | Made to Order – 10 to 15 business day lead time |
Pro-Tip for Perimeter Sealing
The 122NA mounts surface-applied to the face of the frame stop, making it one of the most straightforward perimeter weatherstrip installations for both new construction and retrofit projects. Use the furnished #6 x 3/4" stainless steel sheet metal screws and take advantage of the slotted screw holes to shift each section slightly inward or outward before final tightening — this lets you dial in consistent EPDM foam compression across the full head and both jambs without cutting or shimming. Work from the center of the head piece outward, then install each jamb from the head corner down to the floor to maintain alignment. Because the set is cut to your specified opening size, verify your rough opening dimensions carefully before ordering.
| 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 | Neoprene |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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