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National Guard Products 165NA Neoprene Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
The National Guard Products (NGP) 165NA is a neoprene sponge perimeter weatherstrip head-and-jamb set finished in Anodized Aluminum with a black microcellular EPDM sponge insert. Engineered for commercial and institutional doorways, this screw-applied gasket system seals the full perimeter of the door frame — one head piece and two jamb pieces — delivering airtight, fire-rated, and smoke-and-draft-control performance in a single installation. The 165NA is available in five standard opening sizes (3'0 x 7'0 through 8'0 x 8'0) and is made to order by NGP, meaning each set is cut precisely for the opening you specify. The extruded Aluminum Alloy 6063-T5 retainer and patent-pending microcellular EPDM seal meet the most demanding standards for fire doors, positive pressure, and air infiltration control — making the 165NA a trusted specification-grade solution for architects, contractors, and facilities managers.
High-Performance Weatherstrip Features
- Patent-Pending Microcellular EPDM Seal: NGP's advanced elastomeric foam is engineered from synthetic EPDM rubber in a polypropylene thermoplastic matrix closed-cell structure, providing exceptional resilience and a consistently tight perimeter seal over the life of the door.
- Very Good Abrasion Resistance, Tensile Strength, and Memory: The sponge insert rebounds to its original shape after each door cycle, maintaining seal integrity in high-traffic commercial openings without permanent compression set.
- Wide Temperature Range (-81°F to 275°F): Rated for extreme cold and high heat, the 165NA performs reliably in exterior applications, cold-storage corridors, mechanical rooms, and fire-rated assemblies alike.
- Flame-Resistant and Moisture-Resistant Insert: The EPDM foam is inherently resistant to flame spread and moisture absorption, protecting the seal's performance in stairwells, vestibules, and wet-area applications.
- Good Resistance to Ozone, Sunlight, and Aging: EPDM chemistry resists UV degradation and ozone attack, extending service life in both interior and perimeter exterior openings.
- UL-Certified for Fire Doors – Standard and Positive Pressure: Certified by UL to CAN/ULC-S104 and ANSI/UL 10B (standard fire), and to ANSI/UL 10C (positive pressure); 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-Certified Smoke and Draft Control Gasketing: Certified by UL to ANSI/UL 10C and ANSI/UL 1784 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 for door gasketing and edge sealing systems and listed in the BHMA Certified Products Directory, satisfying specification requirements on public, institutional, and healthcare projects.
- BHMA Certified for Heat and Cold Performance: Tested and certified to ANSI/BHMA A156.22 performance tests for both heat and cold environments, confirming long-term seal effectiveness across climate extremes.
- Air Infiltration Control: NGP designates the 165NA as a recommended product for minimum air leakage and a tight seal around the full door perimeter, supporting energy code compliance and building envelope performance.
- Aluminum Alloy 6063-T5 Retainer: The extruded retainer provides a rigid, corrosion-resistant mounting channel that holds the EPDM insert securely in place and resists warping over time.
- Anodized Aluminum Finish: The anodized surface provides a clean, professional appearance that blends with standard commercial aluminum frame systems while adding a layer of corrosion protection to the retainer.
- Stainless Steel Screws Furnished: Each set ships with #6 x 3/4" stainless steel sheet metal screws, eliminating the need to source fasteners separately and ensuring corrosion-resistant attachment.
- Slotted Screw Holes for Field Adjustment: Screw holes are slotted along the retainer to allow precise positioning during installation, accommodating minor frame variations without cutting or redrilling.
- Head-and-Jamb Set Configuration: Sold as a complete perimeter set — one head piece plus two jamb pieces — sized to the specified opening, so every run of the frame stop is covered in a single order.
- Five Standard Opening Sizes Available: Order by nominal opening: 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 — covering single and pair openings in the most common commercial door heights.
- Made to Order: Each 165NA set is cut to length by NGP for the specified opening. Allow 10–15 business days lead time; plan accordingly for new construction schedules and renovation projects.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model | 165NA |
| 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 |
| Insert Color | Black |
| Retainer Material | Aluminum Alloy 6063, T5 Temper |
| Typical Section Profile | 15/16" x 5/16" |
| Application Surface | Screw-applied to the frame stop |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| 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 |
| Temperature Range | -81°F to 275°F |
| Flame Resistance | Flame-Resistant |
| Moisture Resistance | Moisture-Resistant |
| Environmental Resistance | Good Resistance to Ozone, Sunlight, and Aging |
| Abrasion / Tensile / Memory | Very Good Abrasion Resistance, Tensile Strength, and Memory |
| UL Fire Certification (Standard) | Certified by UL to CAN/ULC-S104 and ANSI/UL 10B; complies with NFPA 80 and NFPA 252 – Hollow Metal doors up to 3 hrs., Wood doors up to 90 min. |
| UL Fire Certification (Positive Pressure) | Certified by UL to ANSI/UL 10C; complies with IBC, NFPA 80, and NFPA 252 – Hollow Metal doors up to 3 hrs., Wood doors up to 90 min. |
| Smoke & Draft Control | Certified by UL to ANSI/UL 10C and ANSI/UL 1784 Category 'H'; complies with IBC and NFPA 105 – 'S'-labeled Positive Pressure Hollow Metal doors up to 3 hrs., Wood doors up to 90 min. |
| BHMA Certification | ANSI/BHMA A156.22 – Listed in the BHMA Certified Products Directory; certified for Heat and Cold Performance Tests |
| Availability | Made to Order |
| Lead Time | 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The 165NA is designed for surface-applied installation directly to the frame stop. The retainer's slotted screw holes allow you to shift the gasket laterally during installation to dial in the compression and close any alignment gap before final tightening. All required #6 x 3/4" stainless steel sheet metal screws are included in the set, so there is no need to source separate fasteners. When ordering for a pair opening, confirm the nominal width — for example, a 6'0 pair — and select the matching set size so the head piece spans the full frame width without splicing.
| 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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