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National Guard Products 110N DKB Neoprene Sponge Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
National Guard Products (NGP) model 110N is a perimeter door weatherstrip head-and-jamb set finished in Dark Bronze with a Patent Pending Microcellular EPDM neoprene sponge insert. Each set ships as one head piece and two jamb pieces — precision cut to your opening size — and installs with a simple screw-applied method directly to the frame stop. Five standard opening sizes are offered: 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, making the 110N DKB an ideal perimeter seal for single and double commercial door openings in hollow metal and wood fire-rated frames alike. UL-certified across multiple fire, positive pressure, and smoke-and-draft control standards, this gasketing system delivers a tight, energy-conscious perimeter seal that meets the most demanding code requirements for commercial, institutional, and industrial door openings.
High-Performance Perimeter Weatherstrip Features
- Patent Pending Microcellular EPDM Foam: NGP's advanced closed-cell elastomeric foam — a Synthetic EPDM Rubber in a Polypropylene Thermoplastic Matrix — provides superior compression recovery and a consistently airtight perimeter seal across the door's head and both jambs.
- Extreme Temperature Range: Rated from -81°F to 275°F, the neoprene sponge insert maintains its sealing performance in freezing cold-storage environments and high-heat fire-rated conditions without degrading or losing memory.
- Very Good Abrasion Resistance and Tensile Strength: The EPDM insert resists the repetitive compression and release of high-traffic commercial doors, extending the service life of the gasketing system.
- Flame- and Moisture-Resistant Insert: The closed-cell foam construction resists moisture absorption while meeting the flame-resistance requirements demanded by NFPA 80 and NFPA 252 fire door applications.
- Good Resistance to Ozone, Sunlight, and Aging: The EPDM compound resists environmental degradation, making this weatherstrip suitable for both interior fire corridors and exterior-facing frame conditions.
- UL-Certified Fire Door Gasketing: Certified by UL to CAN/ULC-S104, ANSI/UL10B (standard pressure), and ANSI/UL10C (positive pressure) for hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes — fully compliant with NFPA 80 and NFPA 252.
- Positive Pressure Certified: UL positive pressure certification to ANSI/UL10C confirms compliance with IBC, NFPA 80, and NFPA 252, a critical performance requirement for stairwell and corridor fire door openings.
- 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.
- BHMA Certified to ANSI/BHMA A156.22: Listed in the BHMA Certified Products Directory for Door Gasketing and Edge Sealing Systems, verifying third-party performance testing for heat and cold resistance.
- Aluminum Alloy 6063-T5 Retainer: The extruded aluminum carrier provides a rigid, corrosion-resistant mounting rail that holds the EPDM insert securely against the frame stop throughout the life of the opening.
- Slotted Screw Holes for Field Adjustment: Factory-slotted mounting holes allow the installer to fine-tune the compression of the gasketing against the door face without drilling new holes or returning to the shop.
- Stainless Steel Fasteners Furnished: #6 x 3/4" stainless steel sheet metal screws are included with every set, eliminating a trip to the supply house and ensuring the fasteners resist corrosion in the field.
- Made to Order in Five Standard Opening Sizes: Cut specifically to your ordered 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), so every piece arrives job-ready with no field cutting of the retainer required.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 110N DKB |
| Product Type | Perimeter Door Weatherstrip, Head-and-Jamb Set (1 head + 2 jambs) |
| Finish | Dark Bronze (DKB) |
| 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 | 1" x 1/2" |
| Application | Screw applied to the frame stop |
| 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 Performance | Very good abrasion resistance, tensile strength, and memory |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| UL Certifications | CAN/ULC-S104 | ANSI/UL10B (Standard Pressure) | ANSI/UL10C (Positive Pressure) | ANSI/UL1784 Category 'H' (Smoke & Draft Control) |
| Fire Door Rating — Hollow Metal | Up to 3 Hours |
| Fire Door Rating — Wood | Up to 90 Minutes |
| Code Compliance | NFPA 80, NFPA 252, NFPA 105, IBC |
| BHMA Certification | ANSI/BHMA A156.22 — Listed in BHMA Certified Products Directory |
| Availability | Made to Order |
| Lead Time | 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The NGP 110N DKB is designed for surface application directly to the frame stop — no routing or mortising required. The factory-slotted screw holes allow you to set the lateral position of the retainer before final tightening, ensuring consistent EPDM compression across the full height of both jambs and the full width of the head. The furnished #6 x 3/4" stainless steel sheet metal screws are sized specifically for the aluminum retainer and standard hollow metal or wood frame stop material. For best results on a head-and-jamb set, install the jamb pieces first, confirm door-face contact is even, then fit and fasten the head piece to complete the perimeter seal.
| 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 | Dark Bronze |
| 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 | Neoprene |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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