Pemko 18400 180-Degree Aluminu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$87.93
$78.73
Pemko 180� Aluminum Fire-Rated Door Bottom Weatherstrip with 7/8"; Nylon Brush

Pemko 18400 180-Degree Aluminum Fire-Rated Door Bottom Weatherstrip with 7/8" Nylon Brush

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Model: 18400CNB-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$87.93
$78.73
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Pemko 180-Degree Aluminum Fire-Rated Door Bottom Weatherstrip with 7/8"; Nylon Brush

Professional Fire-Rated Door Bottom Weatherstrip Solution

The Pemko 180-Degree Aluminum Fire-Rated Door Bottom Weatherstrip with 7/8"; Nylon Brush provides comprehensive sealing for meeting stile applications on fire-rated door pairs. This BHMA certified weatherstrip features a durable aluminum retainer with nylon brush insert, available in 36", 48", or 84"; lengths. UL10C fire rated with positive pressure testing and UL1784 smoke tested, this weatherstrip maintains NFPA 80 compliance requirements for fire door installations.

Professional Features & Benefits

  • Multiple Length Options: Available in 36", 48", or 84"; lengths to accommodate various door configurations and installation requirements.
  • Precision Brush Dimensions: 7/8"; nylon brush insert designed to mesh from 1/32"; to 1/16"; for optimal sealing performance.
  • Fire-Rated Performance: UL10C fire rated with positive pressure testing and UL1784 smoke tested for critical fire door applications.
  • BHMA Certified Construction: Meets rigorous industry standards for commercial door hardware performance and durability with GREENGUARD Gold certification for indoor air quality.
  • Aluminum Retainer Design: Durable 180-Degree aluminum retainer provides secure brush retention and long-term performance in demanding applications.
  • Meeting Stile Application: Specifically designed for brush/meeting stile applications on fire door pairs with NFPA 80 compliance requirements.
  • Air Infiltration Tested: Proven performance in reducing air leakage for energy efficiency and environmental control in commercial buildings.
  • Manufacturer Warranty: 5 Year comprehensive warranty coverage for added confidence and protection in commercial applications.

Technical Specifications

  • ANSI/BHMA: BHMA Certified, Smoke Tested- UL1784, Fire Rated- UL10C- Positive Pressure, Underwriters Laboratory 4L10, GREENGUARD Gold Certified
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Insert Type: Nylon Brush
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 7/8", H: 1/4";
  • Product Group: Door Trim and Accessories
  • Product Length: 36", 48"; or 84";
  • Product Model: 18400
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Substrate: Aluminum
  • Product Type: Weatherstripping
  • Subcategory: Door Sweeps
  • Warranty: 5 Year

Professional Applications

  • Fire-Rated Door Pairs in Commercial Buildings
  • Educational Facility Fire Door Systems
  • Healthcare Institution Fire Safety Compliance
  • Industrial Facility Fire Door Applications
  • Government Building Fire Door Requirements
  • Multi-Tenant Residential Fire Door Installations
  • Hospitality Industry Fire Safety Systems

Why Choose Pemko Quality?

Pemko weatherstripping products deliver professional-grade reliability with aluminum construction and comprehensive fire safety certifications including UL10C and UL1784 testing. GREENGUARD Gold Certified for indoor air quality and backed by a 5 Year warranty for long-term performance assurance. Engineered for demanding commercial fire door applications where code compliance and dependable sealing performance are essential.

Product Specs

Insert Type:
Nylon Brush
Warranty:
5 Year
Subcategory:
Door Sweeps
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Weatherstripping
ANSI/BHMA:
BHMA Certified, Smoke Tested- UL1784, Fire Rated- UL10C- Positive Pressure, Underwriters Laboratory 4L10, GREENGUARD Gold Certified
Commercial/Residential:
Commercial
Product Model:
18400
Product Length:
36", 48" or 84"
Product Dimension:
W: 7/8", H: 1/4"
Product Substrate:
Aluminum
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Pemko 18400CNB-36 – Frequently Asked Questions

1) Will the Pemko 18400 brush weatherstrip keep my fire door pair code compliant?
Yes. The 18400 is fire rated to UL10C under positive pressure and smoke tested to UL1784, and it is BHMA certified, so it holds up under NFPA 80 requirements for fire door assemblies. That combination is what an inspector looks for on a rated pair: the brush seal at the meeting stile has to be a listed product, not just any weatherstrip. It is also GREENGUARD Gold certified, which matters on school and healthcare specs that carry an indoor air quality requirement.
2) What is the Pemko 18400 brush seal actually used for on a pair of doors?
It goes on the meeting stile of a fire rated door pair, where the two door edges come together. The 7/8 inch nylon brush mounts in a 180 degree aluminum retainer so the bristles mesh against the opposing leaf and close that vertical gap for smoke and air. It is not a jamb seal and it is not a door bottom sweep on the threshold; if the gap you are sealing is at the head or hinge jamb, a jamb-applied stop seal is the right part instead.
3) How much gap will the Pemko 18400 nylon brush close on a door pair?
The brush is built to mesh from 1/32 inch to 1/16 inch. That is the intended engagement between the bristles and the opposing surface, so it suits a tight, well hung pair. If your leaves are out of alignment and you are fighting a gap wider than that, the brush will not take up the slack and you need to correct the hanging or move to a different seal profile.
4) What is the closest brush weatherstrip to the Pemko 18400 if I need a different brand?
The Cal-Royal BW-302 is the nearest brush-type equivalent: it is a nylon brush weatherstrip carried in an extruded aluminum seal retainer, which matches the Pemko 18400's nylon brush insert in an aluminum retainer. Both are brush-and-aluminum constructions rather than compression seals. Where they part company is certification: the 18400 carries BHMA certification, UL10C positive pressure fire rating, UL1784 smoke testing and GREENGUARD Gold. If the opening is a labeled fire door pair and the submittal calls for those listings, specify the 18400. For a non-labeled opening where you only need the brush seal, the BW-302 covers the same mechanical job.
5) I need smoke and draft control at the door, not a brush seal - what should I use instead of the Pemko 18400?
Move to a neoprene-insert weatherstrip. The Hager 862S is a 48 inch weatherstrip with a neoprene insert made for smoke and draft control, and the Hager 864S is an 84 inch clear anodized aluminum adjustable jamb weatherstrip, also with a neoprene insert. A neoprene bulb makes continuous contact with the door face, while the Pemko 18400 uses a 7/8 inch nylon brush designed to mesh from 1/32 inch to 1/16 inch, which is a meshing action suited to the meeting stiles of a fire door pair. Choose by where the seal sits: brush for the meeting stile mesh, neoprene at the jamb for draft and smoke contact.
6) Which of these weatherstrips can I put on a labeled fire door pair?
The Pemko 18400 is the one that carries the fire listings: BHMA certified, UL10C fire rated with positive pressure, UL1784 smoke tested, and GREENGUARD Gold certified, and it is specified for meeting stile applications on fire-rated door pairs under NFPA 80. The comparable brush and neoprene strips - the Cal-Royal BW-302 brush weatherstrip, the Hager 726S smoke seal, the Hager 862S neoprene weatherstrip and the Hager 864S adjustable jamb weatherstrip - are weatherstrips whose stated function is sealing, and the fire and smoke listings you would submit to an AHJ come with the 18400. For an institutional submittal package on a labeled opening, that is the deciding difference.
7) How much does the Pemko 18400 retainer stick out from the door edge?
The retainer profile measures W: 7/8 inch, H: 1/4 inch. That quarter inch is the shallow dimension, so the assembly sits close to the face and does not eat much of the gap between leaves or foul astragal hardware. Worth checking against your existing mortise edge conditions before you drill.
8) Is a nylon brush seal or a neoprene seal better for smoke and draft control on a door pair?
Different jobs. A nylon brush like the 18400 sweeps a moving meeting edge and tolerates repeated contact without dragging, which is why it lands on high-traffic pairs. A neoprene or bulb insert compresses instead of sweeping and generally seals tighter on a fixed jamb line. ZenSupply carries both: the Hager 862S uses a neoprene insert for smoke and draft control, and the Hager 864S is a clear anodized aluminum adjustable jamb weatherstrip with a neoprene insert for the frame perimeter. If you need a rated meeting stile brush, stay with the 18400, which is the one here carrying UL10C and UL1784.
9) Can I use a press-on smoke seal instead of the Pemko 18400 on a fire door?
They solve different problems. The Hager 726S is a press-on smoke seal weatherstrip in a charcoal finish, adhesive applied with no extrusion to fasten, which makes it fast on a frame stop. The 18400 is an aluminum retainer product for the meeting stile of a pair, where a brush has to sweep against the other leaf rather than sit compressed. On a rated pair, specify the seal that is listed for the condition you are sealing, and for the meeting stile that is the 18400 with its UL10C positive pressure fire rating.
10) Will the Pemko 18400 hold up in a school or hospital corridor with heavy door traffic?
It is a commercial rated product, built with an aluminum retainer holding the nylon brush, and the intended applications include educational facility fire door systems and healthcare fire safety compliance. The aluminum extrusion is what carries the abuse in those corridors; the brush filament sweeps rather than compressing, so it does not take a permanent set the way a soft gasket can under constant cycling.
11) I need to spec Pemko brush weatherstrip on a drawing. What model and length do I call out?
Call it out as Pemko 18400, then the length: 36, 42, 48, or 84 inches. The single insert type is nylon brush at 7/8 inch, and the retainer is a 180 degree aluminum extrusion measuring W: 7/8 inch, H: 1/4 inch. Add the ratings if the specification section requires them, UL10C positive pressure fire rated and UL1784 smoke tested, BHMA certified.
12) Is the Hager 726S press-on smoke seal a substitute for the Pemko 18400?
They are not interchangeable. The Hager 726S is a press-on smoke seal weatherstrip in a charcoal finish, so it is applied adhesively to the stop or door face with no separate retainer to fasten. The Pemko 18400 is an aluminum retainer holding a 7/8 inch nylon brush, supplied in 36, 42, 48 and 84 inch lengths and dimensioned W 7/8 inch by H 1/4 inch. If the drawing calls for a mechanically fastened aluminum retainer at the meeting stile, a press-on adhesive seal will not satisfy it. If you want a low-profile seal that goes on without drilling the stop, the 726S is the one that does that.
13) I have a 48 inch opening to seal - what are my choices besides the Pemko 18400?
The Hager 862S is furnished at 48 inches with a neoprene insert for smoke and draft control, so it drops into a 48 inch run without cutting. The Pemko 18400 also comes in a 48 inch length in clear anodized aluminum with a gray nylon brush insert. The difference to weigh is the seal type and what the opening demands: the 18400 is the brush-in-aluminum-retainer strip carrying UL10C positive pressure and UL1784 listings for fire door pair meeting stiles, and the 862S is the neoprene strip aimed at smoke and draft. For a non-labeled 48 inch door where draft control is the goal, either seal type does the work; on a labeled pair, the 18400 is the one with the listings.
14) What finish does the Pemko 18400 come in, and will it match my existing aluminum door hardware?
One finish: clear anodized aluminum with a gray nylon brush insert. That reads as a natural mill silver and sits alongside clear anodized frames, thresholds, and aluminum storefront trim without standing out. If your openings are dark bronze or painted, the clear anodized extrusion will be visible at the meeting edge, which is worth knowing before you standardize a whole building on it.
How fast can I get the Pemko 18400CNB-36 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 Pemko 18400CNB-36 come with a warranty?
Absolutely. The Pemko 18400CNB-36 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 Pemko 18400CNB-36?
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 Pemko 18400CNB-36 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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