Pemko Q103W Series Kerf-In Foa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.03
$6.74
Pemko Q Series Kerf-In Weather Strip, Foam

Pemko Q103W Series Kerf-In Foam Weatherstrip with Extended Flange - 1-1/4" x 3/16" Fire Rated

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Model: Q103W 36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$8.03
$6.74
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Pemko Q103W Series Kerf-In Foam Weatherstrip with Extended Flange - 1-1/4"; x 3/16"; Fire Rated

Professional Kerf-In Weatherstripping Solution

The Pemko Q103W Series Kerf-In Foam Weatherstrip delivers professional-grade weather sealing with soft cell foam construction enclosed by an embossed, tear-resistant, low-friction, UV-stable polyethylene cover. Features a rigid PVC insert with extended flange design for secure kerf installation with 1-1/4"; width and 3/16"; height dimensions. Available in lengths from 3' minimum to 121"; maximum and carries UL10C Positive Pressure fire rating for code compliance applications.

Professional Features & Benefits

  • Dimensional Specifications: 1-1/4"; width by 3/16"; height profile designed for standard kerf installations in door frame applications.
  • Length Flexibility: Available from 3' minimum to 121"; maximum length to accommodate various door sizes and configurations.
  • Fire Rating Compliance: UL10C Positive Pressure fire rated with Underwriters Laboratory 4L10 listing for code compliance applications.
  • Advanced Construction: Soft cell foam core with embossed, tear-resistant, low-friction, UV-stable polyethylene cover for long-lasting performance.
  • Extended Flange Design: Rigid PVC insert with extended flange provides secure retention in kerf without requiring nails or adhesives.
  • Minimal Friction Operation: Low-friction polyethylene cover ensures smooth door operation while maintaining effective weather seal.
  • Easy Installation: Kerf-in design eliminates the need for nails or adhesives, allowing quick installation and replacement.
  • Energy Efficiency: Effective weather sealing improves building energy efficiency by reducing air infiltration around door frames.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1-1/4", H: 3/16";
  • Product Group: Door Trim and Accessories
  • Product Model: Q
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Substrate: Silicone
  • Product Type: Weatherstripping
  • Series: Q Series
  • Subcategory: Gaskets & Weatherstripping
  • UL Listing Type: Fire Rated UL10C Positive Pressure, Underwriters Laboratory 4L10

Professional Applications

  • Commercial Office Building Entrances
  • Educational Facility Door Systems
  • Healthcare Institution Climate Control
  • Retail Store Energy Efficiency
  • Industrial Facility Weather Protection
  • Multi-Tenant Residential Properties
  • Government Building Envelope Sealing

Fire Rating Compliance

This weatherstrip carries UL10C Positive Pressure fire rating with Underwriters Laboratory 4L10 listing, making it suitable for fire-rated door assemblies where code compliance is required. The fire-rated construction maintains weather sealing performance while meeting safety requirements for commercial building applications.

Why Choose Pemko Quality?

Pemko Q Series weatherstripping delivers professional-grade performance with tear-resistant, UV-stable polyethylene construction and UL10C fire rating for demanding commercial applications. The extended flange design and soft cell foam core provide reliable weather sealing while maintaining smooth door operation. Engineered for commercial environments where effective weather protection and energy efficiency are essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Weatherstripping
Subcategory:
Gaskets & Weatherstripping
Commercial/Residential:
Commercial
UL Listing Type:
Fire Rated UL10C Positive Pressure, Underwriters Laboratory 4L10
Product Model:
Q
Product Dimension:
W: 1-1/4", H: 3/16"
Product Category:
Door Trim and Accessories
Product Substrate:
Silicone
Department:
Door Hardware
Series:
Q Series

Pemko Q103W 36 – Frequently Asked Questions

1) Can I use the Pemko Q103W on a fire rated door assembly?
Yes. The Q103W carries a UL10C Positive Pressure fire rating with Underwriters Laboratory 4L10 listing, so it can go on fire-rated openings where the AHJ wants a listed gasket. That is the reason to pick it over a plain foam weatherstrip on stairwell, corridor, and tenant separation doors.
2) Will the Pemko Q103W seat in a standard door frame kerf?
The insert leg is 3/16 inch and the exposed profile is 1-1/4 inch wide, which is the standard kerf gasket format used in hollow metal and aluminum frames prepped with a saw kerf in the stop. Measure your kerf slot before ordering a full building's worth: the flange has to enter the slot for the seal to hold without fasteners.
3) What is the difference between the Pemko Q103W kerf-in foam weatherstrip and the Hager 726S smoke seal?
They mount two different ways. The Q103W is a kerf-in weatherstrip: a rigid PVC insert with an extended flange holds it in a kerf cut in the frame, with no nails or adhesive required. The Hager 726S is a press-on smoke seal in a charcoal finish, so it adheres to the face of the frame stop rather than seating in a kerf. If the frames already have a factory kerf, the Q103W drops in; if the frames are unkerfed, a press-on seal like the 726S is the one that installs without milling.
4) Which weatherstrip should I use on a frame that needs adjustment after hanging instead of the Pemko Q103W?
Use the Hager 864S. It is an 84 inch clear anodized aluminum adjustable jamb weatherstrip with a neoprene insert, so the seal position can be set against the door after the frame is hung. The Pemko Q103W is a fixed-position kerf-in strip, 1-1/4 inch wide by 3/16 inch high, seated by its extended flange in the frame kerf, so the compression it gives is whatever the kerf and door alignment produce. On openings where the door leaf has settled or the gap is inconsistent, the adjustable jamb type is the one that lets you dial it in.
5) For a fire-rated opening, does the Pemko Q103W or one of the Hager weatherstrips carry the listing I need?
The Pemko Q103W is the one to specify when the submittal calls for a fire rating: it carries UL10C Positive Pressure with an Underwriters Laboratories 4L10 listing. The Hager 862S and 864S are both neoprene-insert weatherstrips and the 726S is a smoke seal, so on a rated assembly where the drawing cites UL10C positive pressure, the Q103W is the item that answers that line directly.
6) Is the Pemko Q103W weatherstrip going to drag or squeak when the door closes?
The seal is a soft cell foam core wrapped in an embossed, low-friction polyethylene cover, so it compresses easily and slides against the door face rather than grabbing it. That matters on high-traffic openings where a stiff bulb seal makes the door hard to latch. The cover is also tear-resistant and UV-stable, which is what keeps an exterior jamb run from shredding after a season.
7) Do I need fasteners or adhesive to install Pemko Q103W kerf weatherstrip?
Nothing extra to order. The rigid PVC insert with the extended flange presses into the kerf and stays put with no nails and no adhesive. Cut to length, push it in, done. That also makes replacement on an occupied building fast, since you pull the old run out by hand rather than drilling out fasteners.
8) Is Pemko Q103W a smoke seal or just a weather seal?
The Q103W is sold as weatherstripping with a UL10C Positive Pressure fire rating, which covers fire door assembly use. If your spec calls specifically for a smoke and draft control gasket, look at the Hager 726S smoke seal or the Hager 862S, which is listed for smoke and draft control with a neoprene insert.
9) Foam kerf weatherstrip or brush weatherstrip for a commercial entrance?
A foam kerf seal like the Q103W compresses against the door face and gives a tighter air seal, and it drops into an existing frame kerf with no fasteners. A brush seal, such as the Cal-Royal BW-302 nylon brush in an extruded aluminum retainer, tolerates dirt, debris and door misalignment better and is surface mounted on its own retainer. Pick foam for air infiltration and energy performance on a true opening; pick brush where the door is out of alignment or the sill area sees grit.
10) Can I use Pemko Q103W to replace worn gasket on jambs across an apartment building?
That is the usual job for it. Because it is a kerf-in seal held by the flange, you strip the old run out and push a new one in with no drilling and no adhesive residue in the frame, so units can be done one door at a time. It is a commercial-duty product, and the UL10C Positive Pressure listing means the same part works on the corridor fire doors as on the non-rated ones, so you can standardize one item across the building.
11) Is the Cal-Royal BW-302 brush weatherstrip a substitute for the Pemko Q103W?
They seal by different means and are not a like-for-like swap. The Cal-Royal BW-302 is a nylon brush weatherstrip carried in an extruded aluminum seal retainer, so the brush filaments sweep the door and the retainer fastens to the frame. The Pemko Q103W is a soft cell foam core under a tear-resistant, low-friction, UV-stable polyethylene cover, compressed by the door face and held in a kerf. A brush seal tolerates irregular gaps and sliding contact; a compression foam seal gives a closer air seal on a swinging door that shuts consistently against the stop.
12) I need a single-door length off the shelf - how does the Pemko Q103W compare to the Hager 862S and 864S?
The Hager 862S is supplied as a 48 inch weatherstrip with a neoprene insert for smoke and draft control, and the Hager 864S as an 84 inch length, so each is cut to one fixed size. The Pemko Q103W comes in 36 inch and 97 inch insert sizes in white, which covers a head run and a jamb run on a standard commercial opening. Order by which leg of the frame you are sealing rather than by the door height alone.
13) What color is the Pemko Q103W weatherstrip available in?
White only. Both stock sizes, 36 inch and 97 inch, are the white finish. On painted white or light frames it disappears into the stop; on dark bronze or anodized frames it reads as a visible line, which is worth knowing before you standardize a building on it.
14) The door and frame move against each other every cycle - will a foam weatherstrip like the Pemko Q103W drag compared with a brush seal?
The Q103W foam core is enclosed in an embossed, low-friction, UV-stable polyethylene cover specifically so the door slides across it without binding, and the kerf-mounted flange keeps the strip from being pulled out of position. The Cal-Royal BW-302 addresses the same wear with nylon brush filaments in an extruded aluminum retainer, which is the approach usually taken where the contact is sweeping rather than compressive. Both are built for repeated contact; the Q103W is the compression type and the BW-302 the sweep type.
How fast can I get the Pemko Q103W 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 Q103W 36 come with a warranty?
Absolutely. The Pemko Q103W 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 Q103W 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 Q103W 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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