Pemko 5025 Fire Rated Mortise ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$137.93
$25.41
Pemko 5025 84" Mortise Retainer with 1/4" Brush Insert PMK-5025

Pemko 5025 Fire Rated Mortise Retainer Weatherstripping with 1/4" Brush Insert - 84" Length

(1 review) Write a Review

Model: 5025ANB 84

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

$137.93
$25.41
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Pemko 5025 Fire Rated Mortise Retainer Weatherstripping with 1/4"; Brush Insert - 84"; Length

Professional Concealed Weatherstrip Solution

The Pemko 5025 Mortise Retainer delivers professional-grade weathersealing with a 1/4"; brush insert in an 84"; length configuration. This aluminum-constructed retainer features mortise installation design for concealed weatherstrip applications on doors and windows. The system includes UL10C fire rating, UL1784 smoke testing compliance, and BHMA certification for demanding commercial environments.

Professional Features & Benefits

  • Precise Dimensions: 84"; length with 1/4"; width and 1/2"; height brush insert for accurate weathersealing performance.
  • Fire and Smoke Rated: UL10C Positive Pressure fire rated and UL1784 smoke tested for life-safety compliance in commercial applications.
  • Concealed Installation Design: Mortise retainer configuration provides the ultimate solution for hidden weatherstrip requirements.
  • Durable Aluminum Construction: Professional-grade aluminum substrate ensures long-term performance and corrosion resistance.
  • Low Closing Force Operation: Engineered for smooth door operation with minimal resistance while maintaining effective sealing.
  • BHMA Certification: ANSI/BHMA A156.22 certified with comprehensive testing including air infiltration and sound performance.
  • Versatile Application: Suitable for doors, windows, and other architectural openings requiring concealed weatherstripping.
  • Manufacturer Warranty: 5 Year warranty for added confidence and protection.

Technical Specifications

  • ANSI/BHMA: Air Infiltration Tested ASTM E-283-04, Sound Tested ASTM E90, BHMA Certified ANSI/BHMA A156.22, Smoke Tested UL 1784, NFPA 105-2013, Fire Rated UL10B, UL10C Positive Pressure
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Insert Type: Brush
  • Lock Type: Mortise
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1/4", H: 1/2";
  • Product Group: Door Trim and Accessories
  • Product Length: 84";
  • Product Model: 5025
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Substrate: Aluminum
  • Product Type: Weatherstripping
  • Subcategory: Gaskets & Weatherstripping
  • Warranty: 5 Year

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Fire-Rated Door Assemblies

Why Choose Pemko Quality?

Pemko weatherstripping products deliver professional-grade reliability with aluminum construction and comprehensive testing including UL10C fire rating and BHMA certification. Backed by a 5-year manufacturer warranty and GREENGUARD Gold certification for indoor air quality. Engineered for demanding commercial applications where dependable weathersealing and life-safety compliance are essential.

Product Specs

Insert Type:
Brush
Warranty:
5 Year
Subcategory:
Gaskets & Weatherstripping
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Weatherstripping
ANSI/BHMA:
Air Infiltration Tested ASTM E-283-04, Sound Tested ASTM E90, BHMA Certified ANSI/BHMA A156.22, Smoke Tested UL 1784, NFPA 105-2013, Fire Rated UL10B, UL10C Positive Pressure
Commercial/Residential:
Commercial
Lock Type:
Mortise
Product Model:
5025
Product Length:
84"
Product Dimension:
W: 1/4", H: 1/2"
Product Category:
Door Trim and Accessories
Product Substrate:
Aluminum
Department:
Door Hardware

Pemko 5025ANB 84 – Frequently Asked Questions

1) Will the Pemko 5025 weatherstrip work on a fire rated door assembly?
Yes. The 5025 mortise retainer carries a UL10C Positive Pressure fire rating plus UL10B, and it is smoke tested to UL 1784 and NFPA 105-2013. It is also BHMA certified to ANSI/BHMA A156.22. That combination is what a fire door assembly and a smoke barrier opening both need from the perimeter seal, so it can go on rated openings in healthcare, education, and government work without swapping to a different gasket for the rated doors.
2) Does the Pemko 5025 need the door or frame to be routed out to install?
It does. The 5025 is a mortise retainer, meaning the aluminum carrier sets into a groove machined in the door edge or frame stop rather than screwing onto the face. The retainer body is 1/4 inch wide by 1/2 inch high, so that is the kerf you have to cut. If the door and frame are already hung and you cannot machine them, a press-on or surface applied seal is the right call instead: the Hager 726S installs press-on, and the Hager 864S is a surface mounted adjustable jamb strip.
3) Is the Pemko 5025 rated for a smoke barrier or draft control opening?
Smoke tested to UL 1784 and to NFPA 105-2013, which is the standard governing smoke door assemblies. That covers the S-label perimeter gasketing requirement inspectors look for on smoke barrier corridors. The 5025 is a commercial product, aluminum retainer with a brush insert.
4) What is the closest brush weatherstrip to the Pemko 5025 mortise retainer?
The Cal-Royal BW-302 is the nearest match on sealing element and retainer material: it is a nylon brush weatherstrip carried in an extruded aluminum seal retainer, the same brush-in-aluminum pairing as the Pemko 5025, which uses a brush insert on an aluminum substrate. The difference to check before you order is the retainer profile. The Pemko 5025 is a mortise retainer, so the frame or door edge has to be routed to receive it and the retainer sits flush and concealed. Specify the Cal-Royal BW-302 when you want a brush seal and the opening is not being prepped for a mortise; specify the 5025 when the prep is there and the seal has to be hidden.
5) What weatherstrip can I use if the door frame is already installed and cannot be routed for a mortise?
The Hager 726S is a smoke seal weatherstrip with press-on installation, so it goes onto the face of an existing stop without routing the frame. That makes it the practical choice on a retrofit where the openings are finished and no one is cutting a mortise pocket. The Pemko 5025 is a mortise retainer and expects a routed groove in the frame or door edge, which is why it is normally specified on new frames or during a full door and frame replacement. A property manager reworking occupied units usually lands on the press-on part; a contractor prepping frames before hanging lands on the mortise retainer.
6) Brush insert or neoprene insert for a smoke and draft control opening?
Both sealing elements are used on smoke and draft assemblies, and the choice is about the opening, not about quality. The Pemko 5025 carries a 1/4 inch wide by 1/2 inch high brush insert and is smoke tested to UL 1784 and NFPA 105-2013 along with UL10B and UL10C positive pressure fire rating. The Hager 862S carries a neoprene insert and is built for smoke and draft control. Brush tolerates a door that sweeps or racks slightly and keeps closing force low; a solid neoprene bulb compresses against the stop and wants a door that closes consistently to the same point. On a door with a warp or an uneven reveal, the brush is the more forgiving element; on a tight, true opening, either seals.
7) Is the Hager 864S adjustable jamb weatherstrip a drop-in substitute for the Pemko 5025?
They are not interchangeable even though both come in 84 inch. The Hager 864S is an adjustable jamb weatherstrip in clear anodized aluminum with a neoprene insert, so the seal carrier can be shifted after mounting to take up an uneven reveal. The Pemko 5025 is a mortise retainer in aluminum: it seats in a routed pocket in a fixed position and the seal line is set by the prep, not adjusted afterward. Order the 864S when the reveal varies down the jamb and you want to dial the seal in on site. Order the 5025 when the frame is prepped for a mortise and the weatherstrip has to disappear into it.
8) Brush seal or a rubber bulb seal for a commercial door perimeter?
The 5025 uses a brush insert. Brush wipes rather than compresses, so closing force stays low and the seal tolerates a door that is slightly out of alignment or racked, which is common on high traffic openings that get abused. A neoprene or bulb insert compresses tighter and does better on straight air infiltration and water, but it drags more on the door. If you want the compression seal instead, the Hager 862S and the Hager 864S both use a neoprene insert. For sound and air, the 5025 is tested to ASTM E90 and ASTM E-283-04.
9) How much of a gap does the Pemko 5025 brush seal fill?
The retainer measures 1/4 inch wide by 1/2 inch high, and the brush projects out from there. It is sized for the normal commercial clearance between door edge and frame stop, not for closing a large gap left by a badly hung door or a warped slab. If the opening has a gap wide enough to see daylight through in patches, fix the door before gasketing it, or move to an adjustable strip such as the Hager 864S adjustable jamb weatherstrip, which lets you dial the seal in after hanging.
10) How many pieces of Pemko 5025 do I need per door opening?
Figure three pieces for a single door: two jamb legs and one head. On a 3 foot by 7 foot opening that is two 84 inch lengths and one 40 inch length. A pair of doors takes the same head and jambs plus whatever you use at the meeting stile, which is a separate astragal, not this part. Order by the leg length you actually need and cut down rather than splicing, since a butt joint in the retainer leaks air and breaks the continuity a rated opening wants.
11) Which weatherstrip should a facility standardize on for fire rated door assemblies?
For a facility standard on fire rated assemblies, the Pemko 5025 is the one with the full life safety package stated: UL10B and UL10C positive pressure fire rated, smoke tested to UL 1784 and NFPA 105-2013, BHMA certified to ANSI/BHMA A156.22, air infiltration tested to ASTM E-283-04 and sound tested to ASTM E90. Among the comparables, the Hager 726S is a smoke seal and the Hager 862S is built for smoke and draft control, which addresses the smoke side of the opening. Where the inspector is looking for the fire rating documented on the gasketing itself, the 5025 is what you cite. It runs in 40 inch, 84 inch, 96 inch and 106 inch, which covers standard and tall door heights on one part number family.
12) I need a 48 inch weatherstrip for a smoke rated opening - what fits?
The Hager 862S is supplied at 48 inch with a neoprene insert for smoke and draft control, so it suits a short opening such as a transom or a low head condition without cutting stock down. The Pemko 5025 runs 40 inch, 84 inch, 96 inch and 106 inch, so the 40 inch is the short option in that family and anything between 40 and 84 means cutting an 84 inch length to fit. Cutting aluminum retainer stock is routine, but if you want the length as supplied at 48 inch, the 862S is the part.
13) Will the Pemko 5025 make the door harder to close or interfere with a closer?
Brush inserts wipe across the stop rather than compressing against it, so the added closing force is minimal compared to a compression bulb. That matters on doors with a closer set light for accessibility and on openings where staff push through with carts. If you need the tighter compression seal and can accept the extra force, the neoprene insert versions such as the Hager 862S are the trade in the other direction.
14) Can the Pemko 5025 be used on windows and not just doors?
Yes. The 5025 mortise retainer with the 1/4 inch brush insert works on any architectural opening machined to take it, windows included, since the seal depends on the groove and the stop rather than on anything door specific. The retainer is aluminum, which holds up in exterior and high humidity locations.
15) What is the difference between the Pemko 5025 and the Cal-Royal BW-302 on finish appearance?
Finish visibility is the real distinction. The Pemko 5025 is a mortise retainer, so the aluminum carrier sits down in a routed pocket and only the brush and the edge of the retainer read on the opening. The Cal-Royal BW-302 mounts its nylon brush in an extruded aluminum seal retainer that is applied to the surface, so the retainer profile stays visible along the jamb. On a healthcare or office corridor where the specifier wants clean frame lines, that concealment is usually why the mortise version gets called out.
How fast can I get the Pemko 5025ANB 84 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 5025ANB 84 come with a warranty?
Absolutely. The Pemko 5025ANB 84 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 5025ANB 84?
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 5025ANB 84 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.

Product Reviews

  • 5
    Great for Sealing Gaps

    Posted by Dylan on Jul 8th 2024

    It seals gaps perfectly, keeping drafts out.

!