NGP 135NDKB Neoprene Perimeter...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$577.53
NGP 135NDKB Neoprene Perimeter Seal with Dark Bronze Finish and EPDM Rubber Construction

NGP 135NDKB Neoprene Perimeter Seal with Dark Bronze Finish and EPDM Rubber Construction

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Model: 135NDKB 36X84

In Stock (leaves warehouse same day if ordered before 3pm ET)

$577.53
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NGP Neoprene Perimeter Seal with Dark Bronze Finish and EPDM Rubber Construction

Professional Door Weatherstripping Solution

The NGP Neoprene Perimeter Seal delivers superior weatherproofing performance with synthetic EPDM rubber construction in a polypropylene thermoplastic matrix. This commercial-grade seal features aluminum alloy 6063 T5 temper construction with dark bronze finish and operates effectively in temperature ranges from -81 F to 275 F. BHMA certified to ANSI/BHMA A156.22 performance tests for heat and cold, ensuring reliable performance in demanding commercial applications.

Professional Features & Benefits

  • Temperature Performance: Operates reliably from -81 F to 275 F for year-round performance in extreme weather conditions.
  • Heavy-Duty Construction: Aluminum alloy 6063 T5 temper frame with synthetic EPDM rubber provides exceptional durability and longevity.
  • Superior Material Properties: Very good abrasion resistance, tensile strength and memory for consistent sealing performance over time.
  • Weather Resistance: Flame-resistant and moisture-resistant construction with good resistance to ozone, sunlight and aging.
  • BHMA Certification: Certified to ANSI/BHMA A156.22 performance tests for heat and cold ensuring code compliance and reliability.
  • Adjustable Installation: Slotted screw holes allow for precise positioning and alignment during installation.
  • Complete Hardware: Includes #6 x 3/4" stainless steel sheet metal screws for secure mounting.
  • Optional Fast Attach: FATT (Fast Attach Tape) option available for alternative installation methods.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Type: Gasketing
  • Series: Neoprene Sponge Seal Series
  • Subcategory: Gaskets & Weatherstripping

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose NGP Quality?

NGP perimeter seals deliver professional-grade reliability with aluminum alloy 6063 T5 temper construction and synthetic EPDM rubber rated for extreme temperature performance from -81 F to 275 F. BHMA certified to ANSI/BHMA A156.22 performance standards with superior abrasion resistance and weather durability. Engineered for demanding commercial applications where dependable weatherproofing performance is essential.

Product Specs

Product Group:
Door Trim and Accessories
Series:
Neoprene Sponge Seal Series
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Gasketing
Subcategory:
Gaskets & Weatherstripping
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP 135NDKB 36X84 – Frequently Asked Questions

1) Will the NGP 135NDKB perimeter seal fit a 3-foot by 7-foot door frame?
Yes. The 135NDKB is sold in kit sizes cut for the opening, and 36" x 84" covers a standard 3-0 x 7-0 single door. There is also a 36" x 96" set for 8-foot-tall openings and a 72" x 84" set for a pair of 3-0 doors at 7-0 height. The first number is the head length and the pair of jamb legs follow the second, so order by the frame's actual rough opening rather than by the door slab.
2) What do I order to weatherstrip a pair of doors instead of a single door?
The 72" x 84" size of the NGP 135NDKB is the pair-of-doors set, doubling the head length to 72 inches to cross both leaves. For a single opening the 36-inch head sizes are the ones to order. A perimeter seal like this handles the head and the two jambs only, so a pair also needs an astragal at the meeting stiles and a door bottom or sweep at the threshold to close the opening completely.
3) Is the NGP 135NDKB neoprene perimeter seal rated for cold climates and unconditioned spaces?
It works from -81 F to 275 F, and the EPDM rubber bulb is BHMA certified to the ANSI/BHMA A156.22 performance tests for heat and cold. That covers unheated loading docks, mechanical rooms, and exterior doors in hard winter climates without the seal going stiff and quitting on the cold side, or sagging on a sun-loaded south elevation.
4) Can I use the NGP neoprene perimeter seal on a fire-rated door opening?
The 135NDKB is a weatherseal, and the certification it carries is BHMA to ANSI/BHMA A156.22 for heat and cold performance, not a fire label. For a rated opening the gasketing has to be the smoke and fire seal specified in the door's listing, so treat this one as air and water infiltration control on exterior and unrated openings. The construction is flame resistant and moisture resistant, but that is a material property, not an opening rating.
5) What is a cross-brand equivalent to the NGP 135NDKB perimeter seal?
The Cal-Royal PG-601 aluminum channel perimeter gasketing is the closest cross-brand counterpart. Both are channel-style perimeter gasketing that mounts to the frame stop around the head and jambs. The difference is the sealing element: the NGP 135NDKB uses a synthetic EPDM rubber seal in a polypropylene thermoplastic matrix carried in an aluminum alloy 6063 T5 temper channel, rated from -81 F to 275 F and BHMA certified to ANSI/BHMA A156.22 heat and cold performance tests, while the PG-601 carries a vinyl insert in its aluminum channel. Where a submittal calls out an elastomeric seal or A156.22 certification, the 135NDKB is the one that answers it.
6) Does the NGP 135NDKB dark bronze seal come with fasteners, or do I need to supply screws?
Screws are in the box: #6 x 3/4 inch stainless steel sheet metal screws. The screw holes in the aluminum retainer are slotted, so the seal can be shifted after the screws are started to dial in compression against the door face. If you would rather not drill the frame, NGP offers the FATT fast attach tape option for adhesive mounting.
7) Will a neoprene sponge seal hold up on a high-traffic commercial entrance, or should I use a different gasket?
Spongy EPDM bulb seals like the 135NDKB are the right pick where the door needs a soft, continuous seal against light air and water infiltration, and NGP rates this compound for very good abrasion resistance, tensile strength, and memory, which is what keeps it from taking a permanent set on a door cycling all day. Where the gasket will take carts, luggage, or direct impact, a rigid vinyl-insert channel gasket takes the abuse better, and the aluminum channel design on the Cal-Royal PG-601 with its vinyl insert is that style.
8) I have dark bronze NGP weatherstripping on the rest of my building's doors. Can I standardize on this one for replacements?
That is what the 135NDKB is built for. It is a commercial-duty seal offered in three kit sizes, 36" x 84", 36" x 96", and 72" x 84", so single 7-foot openings, 8-foot openings, and pairs all come from the same series and the same dark bronze finish. Keeping one part number across a fleet means one stocked spare and one finish match; measure the tallest and widest frames in the building and you will know which of the three sizes to keep on the shelf.
9) Does the NGP 135NDKB mount to the frame stop or to the door face?
It is a frame-applied perimeter seal: the aluminum retainer screws to the stop of the head and both jambs, and the EPDM bulb compresses against the face of the closed door. Because the holes are slotted, the retainer can be walked in or out slightly to tune how hard the bulb bears on the door, which matters on an opening where a closer is fighting too much compression or where the door is out of square in the frame.
10) Is vinyl or EPDM the better seal insert for an exterior commercial opening?
They are different materials, not different grades of the same one. The NGP 135NDKB uses synthetic EPDM rubber with very good abrasion resistance, tensile strength and memory, good resistance to ozone, sunlight and aging, and a service range of -81 F to 275 F, certified to ANSI/BHMA A156.22 for heat and cold. The Cal-Royal PG-601 uses a vinyl insert in its aluminum channel. On a sun-exposed exterior door or a freezer-adjacent opening, buyers who want the documented temperature and aging behavior specify the EPDM seal; on a sheltered interior opening, a vinyl insert channel covers the same geometry.
11) Is the NGP 135NDKB seal's dark bronze finish painted aluminum or anodized, and will it match other bronze door hardware?
The retainer is aluminum alloy 6063 T5 temper with a dark bronze finish, which is the standard dark bronze used on commercial aluminum storefront framing and thresholds. It reads as a dark brown-bronze, so it blends with bronze anodized frames and dark bronze door bottoms rather than with oil-rubbed bronze lock trim, which is a warmer, redder tone.
12) Will the neoprene bulb on this NGP seal break down from UV and ozone on a west-facing exterior door?
The synthetic EPDM rubber used in the 135NDKB is rated with good resistance to ozone, sunlight, and aging, which is the reason EPDM gets specified over natural rubber on sun-exposed exterior openings. Paired with the -81 F to 275 F service range, it holds up on a west or south elevation where surface temperature on a dark door climbs well past ambient.
How fast can I get the NGP 135NDKB 36X84 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the NGP 135NDKB 36X84 come with a warranty?
Absolutely. The NGP 135NDKB 36X84 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the NGP 135NDKB 36X84?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the NGP 135NDKB 36X84 from ZenSupply?
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