Pemko 61 Series Interlocking J...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$16.47
$15.72
Pemko 61 Series Interlocking J Hook Threshold Accessory 36"; Steel Construction

Pemko 61 Series Interlocking J Hook Threshold Accessory 36" Steel Construction

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Model: Z61-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$16.47
$15.72
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Pemko 61 Series Interlocking J Hook Threshold Accessory 36"; Steel Construction

Professional Threshold Sealing Solution for Exterior Doors

The Pemko 61 Series Interlocking J Hook Threshold Accessory provides superior sealing performance for exterior door applications. This 36"; steel accessory features precise 1/4"; overall height and 3/8"; width dimensions, designed to interlock with compatible thresholds for maximum protection against air, wind, and water infiltration. Constructed from durable .015 steel with UL 10C positive pressure fire rating certification for demanding commercial applications.

Professional Features & Benefits

  • Precise Dimensions: 36"; length with 1/4"; overall height and 3/8"; width for accurate threshold integration and superior sealing performance.
  • Heavy-Duty Steel Construction: .015 steel thickness provides exceptional durability and long-lasting performance in exterior door applications.
  • Interlocking Design: J hook configuration creates a mechanical barrier that interlocks with thresholds for superior seal against air, wind, and water infiltration.
  • Fire Rating Certification: UL 10C positive pressure certified for fire-rated door assemblies and code compliance requirements.
  • Flexible Installation: Easily resized for custom applications and available with or without application screws for installation versatility.
  • Exterior Door Optimization: Specifically designed for bottom-of-door application on exterior doors where weather sealing is critical.

Technical Specifications

  • Department: Door Hardware
  • Features: When Installed Properly on the Bottom of the Door, Hooks will Interlock With a Threshold for a Superior Seal
  • For Use With: Architectural Doors
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1/4", H: 15/16";
  • Product Function: Theshold
  • Product Group: Door Trim and Accessories
  • Product Length: 36";
  • Product Model: 61
  • Product Subgroup: Residential Thresholds and Sills
  • Product Type: Thresholds
  • Subcategory: Thresholds & Ramps
  • UL Listing Type: Fire Rated UL10C Positive Pressure

Professional Applications

  • Commercial Office Building Exterior Doors
  • Educational Facility Weather Sealing
  • Healthcare Institution Environmental Control
  • Retail Establishment Energy Efficiency
  • Industrial Facility Weather Protection
  • Multi-Tenant Residential Entry Systems
  • Government Building Code Compliance

Why Choose Pemko Quality?

Pemko threshold accessories deliver professional-grade reliability with precision-engineered steel construction and UL 10C positive pressure fire rating certification. The 61 Series interlocking design provides superior weather sealing performance with durable .015 steel construction rated for demanding exterior door applications. Engineered for commercial applications where dependable weather protection and code compliance are essential.

Product Specs

Features:
When Installed Properly on the Bottom of the Door, Hooks will Interlock With a Threshold for a Superior Seal
Product Group:
Door Trim and Accessories
Product Subgroup:
Residential Thresholds and Sills
Product Type:
Thresholds
Subcategory:
Thresholds & Ramps
UL Listing Type:
Fire Rated UL10C Positive Pressure
Product Model:
61
Product Length:
36"
Product Dimension:
W: 1/4", H: 15/16"
For Use With:
Architectural Doors
Product Function:
Theshold
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Pemko Z61-36 – Frequently Asked Questions

1) What does the Pemko 61 J hook do, and where does it go on the door?
The Pemko 61 is a hook-shaped door bottom strip that mounts on the bottom of the door face and drops into a matching interlocking threshold below. When the door closes, the hook engages the threshold's channel, forming a mechanical break against air, wind and water rather than relying on a sweep or a compressed gasket. Because the seal is made by the hook engaging the threshold, it only works if the threshold under the opening is the interlocking type; on a flat saddle threshold there is nothing for it to hook into and you want a door bottom sweep instead.
2) Is the Pemko 61 hook strip approved for use on a fire rated door?
Fire rated, and carried as UL 10C positive pressure. That is the listing that matters on a labeled opening under current positive pressure testing, so an institutional or MRO buyer specifying door bottoms on rated exterior openings in a school, hospital or government building can use it. Confirm the door and frame assembly label itself permits added door bottom hardware, since the listing covers the part, not your particular assembly.
3) What size is the Pemko 61 J hook, and will it fit under a door with tight bottom clearance?
The 61 measures 1/4 inch by 15/16 inch in section and comes 36 inches long. The 1/4 inch dimension is the shallow one, so it adds very little beyond the door face, but the hook still needs undercut clearance to swing over and into the threshold channel. On a 36 inch wide leaf the 36 inch length runs the full door bottom; on a narrower leaf you cut it down.
4) I am standardizing weather seals across a building. Can I use the Pemko 61 on every exterior door?
Only on openings that already have, or will get, an interlocking threshold. The 61 seals by hooking into that threshold's channel, so a door over a plain saddle or a ramped ADA style threshold gets no seal from it at all. For a fleet standard, the practical approach is to pair the 61 with matching interlocking thresholds at the openings you are rebuilding, and specify a sweep type door bottom at the openings where you are keeping the existing flat threshold.
5) Do screws come with the Pemko 61 hook or do I have to order fasteners separately?
The 61 is offered both with and without application screws, so fastening is an ordering choice, not an assumption. If you are ordering for a crew doing several openings, settle that on the order form rather than showing up with a box of strips and nothing to hang them with.
6) Will the Pemko 61 J hook work on an interior door or is it only for exterior openings?
It is built for exterior openings, where air, wind and water infiltration is the problem being solved, and it is intended for architectural doors. On an interior door there is normally no interlocking threshold to hook into and no weather to keep out, so the interlock buys you nothing. Use a standard door bottom or smoke seal there instead.
7) How thick is the steel on the Pemko 61 hook strip, and will it hold up on a high traffic entry?
The strip is .015 steel. That is a light gauge by design, the 61 is a thin interlocking hook, not a structural door bottom, and the strength in the assembly comes from the threshold it engages. It is rated for exterior door use in commercial settings, but on an entry taking cart and dolly traffic, expect the interlock to depend on the door bottom staying straight and the strip staying screwed tight.
8) What color and material options does the Pemko 61 come in?
One configuration: 36 inch length in Z steel metal. There is no anodized aluminum or bronze option on the 61, so if the specification calls for a finish to match aluminum storefront trim, the steel hook is what you are getting at the door bottom, hidden against the threshold when the door is closed.
How fast can I get the Pemko Z61-36 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 Z61-36 come with a warranty?
Absolutely. The Pemko Z61-36 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 Z61-36?
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 Z61-36 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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