?unique=c07dd9d)
?unique=c07dd9d)
National Guard Products 161NDKB Neoprene Bulb Perimeter Weatherstrip Head-and-Jamb Set – Dark Bronze
The National Guard Products (NGP) 161NDKB is a Neoprene Bulb Perimeter Weatherstrip sold as a complete head-and-jamb set (one head piece and two jamb pieces) in a Dark Bronze finish with a black neoprene bulb insert. Engineered from Aluminum Alloy 6063-T5 extrusions and a synthetic EPDM rubber in a polypropylene thermoplastic matrix, the 161NDKB delivers a resilient, flame-resistant perimeter seal for commercial hollow metal and wood door openings. The set is screw-applied directly to the door frame stop, covers five standard opening sizes, and carries multiple UL fire and smoke certifications — making it one of the most compliance-ready perimeter gasketing solutions available for new construction and retrofit projects alike.
High-Performance Neoprene Bulb Perimeter Weatherstrip Features
- UL Fire Door Certification (Standard Pressure): Certified by UL to CAN/ULC-S104 and ANSI/UL 10B; 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.
- Positive Pressure Fire Door Certification: Certified by UL to ANSI/UL 10C; 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 under positive pressure conditions.
- Smoke & 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 — a critical credential for life-safety and egress corridor applications.
- ANSI/BHMA A156.22 Certified Gasketing: Independently certified and listed in the BHMA Certified Products Directory, confirming compliance with the American National Standard for Door Gasketing and Edge Sealing Systems — including performance tests for heat and cold.
- Air Infiltration Control: Recommended as a minimum air leakage product, forming a tight perimeter seal that reduces conditioned-air loss and helps buildings meet energy code requirements.
- Extreme Temperature Performance: The EPDM neoprene bulb maintains its seal across a wide temperature range of -81°F to 275°F, ensuring reliable performance in cold storage, high-heat utility corridors, and exterior applications exposed to harsh climates.
- Exceptional Material Durability: The synthetic EPDM rubber matrix provides very good abrasion resistance, tensile strength, and memory, returning to its original profile after repeated door cycles without permanent compression set.
- Flame- and Moisture-Resistant: The neoprene bulb is inherently flame-resistant and moisture-resistant, reducing the risk of material degradation in wet or high-humidity environments such as exterior entries and vestibules.
- Ozone, Sunlight, and Aging Resistance: EPDM chemistry gives the bulb good resistance to ozone, UV exposure, and long-term aging, preserving seal integrity on exterior or partially exposed openings over years of service.
- Stainless Steel Fasteners Furnished: Each set ships with #6 × 3/4" stainless steel sheet metal screws to resist corrosion in high-moisture environments, eliminating the need to source separate hardware.
- Slotted Screw Holes for Field Adjustment: Screw holes are slotted, allowing installers to fine-tune the position of the weatherstrip against the door face for a consistent, gap-free seal without re-drilling.
- Complete Head-and-Jamb Kit: Supplied as a matched set of three pieces — one head and two jambs — sized to the ordered opening, simplifying procurement and ensuring all profiles are cut from the same production run for consistent color and fit.
- Dark Bronze Finish: The aluminum extrusion carries a Dark Bronze (DKB) finish that coordinates with dark bronze door frames, closers, and architectural hardware on commercial storefronts and institutional entries.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 161NDKB |
| Product Type | Neoprene Bulb Perimeter Weatherstrip – Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Bulb / Insert Color | Black Neoprene |
| Extrusion Material | Aluminum Alloy 6063, T5 Temper |
| Seal Insert Material | Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix |
| Typical Section Profile | 7/8" × 5/16" (.07" aluminum) |
| Temperature Range | -81°F to 275°F |
| Application Method | Screw-applied to the door frame stop |
| Fasteners Included | #6 × 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| Set Configuration | 1 Head + 2 Jambs (3-piece perimeter set) |
| Available Opening Sizes | 3'0 × 7'0 | 4'0 × 7'0 | 6'0 × 7'0 | 6'0 × 8'0 | 8'0 × 8'0 |
| Fire Door Rating – Standard Pressure | Hollow Metal up to 3 Hours; Wood up to 90 Minutes (UL Certified to CAN/ULC-S104 & ANSI/UL 10B; NFPA 80 & NFPA 252) |
| Fire Door Rating – Positive Pressure | Hollow Metal up to 3 Hours; Wood up to 90 Minutes (UL Certified to ANSI/UL 10C; IBC, NFPA 80 & NFPA 252) |
| Smoke & Draft Control | UL Certified to ANSI/UL 10C & ANSI/UL 1784 Category 'H'; IBC & NFPA 105 – 'S' Labeled Positive Pressure Hollow Metal up to 3 Hours; Wood up to 90 Minutes |
| Gasketing Standard | ANSI/BHMA A156.22 Certified; Listed in BHMA Certified Products Directory |
| Flame Resistance | Yes |
| Moisture Resistance | Yes |
| Ozone / UV / Aging Resistance | Good |
| Abrasion Resistance / Tensile Strength / Memory | Very Good |
| Lead Time | Made to Order – approximately 10–15 business days |
Pro-Tip for Perimeter Sealing
The NGP 161NDKB is surface-applied directly to the door frame stop, requiring no routing or mortising. The slotted screw holes let you shift the strip laterally after snugging the furnished #6 × 3/4" stainless steel sheet metal screws, so you can dial in the bulb compression against the door face before fully tightening — a significant advantage on frames that have shifted slightly out of square over time. Because the set is made to order in the exact opening size you specify, measure the door frame opening carefully (not the door slab) before ordering. For openings with active and inactive leaves, order each leaf's set separately to ensure correct jamb lengths.
| 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 | 7/8" x 5/16" (.07" aluminum) |
| 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 |
Recently Viewed Items