Pemko 252 Series Half Threshol...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$47.22
$33.96
Pemko 252 Series Half Threshold – Dark Bronze Anodized Aluminum, 2" Width, 1/2" Height, ADA Compliant Commercial Door Threshold

Pemko 252 Series Half Threshold 2" Wide 1/2" Rise ADA Compliant Aluminum Commercial Door Threshold

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Model: 252D 36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$47.22
$33.96
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Pemko 252 Series Half Threshold: 2" Wide, 1/2" Rise, ADA Compliant

The Pemko 252 Series Half Threshold is a commercial-grade floor transition designed to eliminate tripping hazards at floor offsets. At 2" wide and 1/2" high, it meets ADA requirements for changes in level and is UL 10C positive-pressure listed, making it a code-compliant choice for rated door assemblies in offices, schools, healthcare facilities, and multi-family properties. Available in Mill Finish Aluminum and Dark Bronze Anodized Aluminum, with custom lengths cut from 24" to 185".

Key Features

  • ADA Compliant: 1/2" rise meets ANSI/BHMA A117.1 accessibility requirements when properly installed.
  • UL Listed: UL 10C positive pressure and UL 4L10 listed; meets ANSI/BHMA A156.21 threshold standards.
  • Custom Lengths: Cut to order from 24" minimum to 185" maximum, fits standard and oversized openings without field cutting waste.
  • Aluminum Construction: Integrated channel accepts thermal keys for enhanced thermal performance at the door sill.
  • Combinable Design: Can be paired with other Pemko half saddles to build up custom height or width configurations.
  • Standard Fasteners Included: Ships with #10 x 1-1/2" wood screws; alternative fasteners available for concrete and hollow metal substrates.

Technical Specifications

  • Series: 252
  • Width: 2"
  • Height: 1/2"
  • Available Lengths: 24" to 185" (custom cut)
  • Available Finishes: Mill Finish Aluminum (252A), Dark Bronze Anodized Aluminum (252D)
  • Material: Aluminum
  • Certifications: UL 10C, UL 4L10, ANSI/BHMA A156.21, ANSI/BHMA A117.1 (ADA)

Typical Applications

  • Commercial office buildings and tenant suites
  • K-12 schools and higher education facilities
  • Hospitals, clinics, and long-term care facilities
  • Retail storefronts and restaurants
  • Government and municipal buildings
  • Multi-family and mixed-use residential properties
  • Industrial and warehouse entry points

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Commercial Thresholds
Product Model:
252
Product Dimension:
W: 2", H: 1/2"
Product Category:
Door Trim and Accessories
Department:
Door Hardware
Series:
252 Series

Pemko 252D 36 – Frequently Asked Questions

1) Will a Pemko 252 half threshold meet ADA at a doorway with a floor offset?
That is what the 252 half saddle is cut for. It stands 1/2 inch high, which is the ceiling ADA allows for a change in level at an opening, and Pemko rates the 252 against ANSI/BHMA A117.1 for accessibility. Two things decide whether it stays compliant on your job. First, the 1/2 inch is measured from finished floor, so setting the saddle on top of shims or an old sill plate pushes the total rise past the limit. Second, if the offset you are covering is already taller than 1/2 inch, no threshold solves it and you are into a ramped transition instead.
2) Can the Pemko 252 threshold be used under a fire-rated door assembly?
Yes. The 252 half threshold carries a UL 10C positive-pressure listing and is UL 4L10 listed, and it is built to the ANSI/BHMA A156.21 threshold standard, so it can go under a rated opening. That combination is what an inspector looks for on a rated assembly in a school, hospital corridor, or apartment corridor door, and it is the reason the same profile can be specified on both the rated and the non-rated openings in a building instead of running two different saddles.
3) Is a 2 inch wide half saddle enough to cover a full door sill?
No, and that is by design. At 2 inches (50.8 mm) wide, the 252 takes up the floor offset on one side of the door rather than spanning the whole sill the way a full saddle does. Pemko makes the half saddles combinable, so a second Pemko half saddle can be set alongside or on top of the 252 to build up more width or more height where the offset is larger or where both sides of the opening need to be picked up. If you want one piece that runs the full depth under the door, order a full-width saddle instead of a half.
4) What length Pemko 252 threshold do I need for my opening?
Stock lengths are 36 inches and 72 inches, and both are offered in either finish. Past those, the 252 is cut to order anywhere from 24 inches up to 185 inches, which covers everything from a narrow utility or closet opening to a wide storefront or double-egress pair without leaving you a cut-off to scrap. Measure the frame opening at the floor, jamb to jamb, not the door leaf width, since the saddle runs the full width of the frame and not just the door.
5) Will the screws supplied with the Pemko 252 threshold work on a concrete sill?
No. The 252 ships with #10 x 1-1/2 inch wood screws, and those are for a wood substrate only. Anchoring a half saddle down to a concrete slab, or to a hollow metal frame sill, takes the alternative fasteners Pemko offers for those substrates, so sort that out when you place the order rather than showing up to a slab with wood screws in the box. Worth confirming what is actually under the finished floor at the opening before you decide, because a lot of commercial sills that look like wood turn out to be a metal pan or a slab.
6) Does the Pemko 252 come in a bronze finish to match dark bronze doors and frames?
Two finishes on the 252: mill finish aluminum, model 252A, and dark bronze anodized aluminum, model 252D. Both are offered in the 36 inch and 72 inch lengths. Dark bronze anodized is the one to specify where the frames, hinges, and exit device trim are already dark bronze, and mill finish is the plain aluminum that reads neutral against clear-anodized aluminum storefront. If you are standardizing a building, pick one and carry it across the openings, because the two do not blend well side by side on adjacent doors.
7) I am replacing a worn out half saddle at an entry door. Will the Pemko 252 drop into the same spot?
Measure the piece you are pulling before you order. If the old saddle is 2 inches wide with a 1/2 inch rise, the 252 sits in the same footprint and the door clearance underneath does not change. Where it will not be a straight swap is if the existing piece is taller or wider, since the 252 is a fixed 2 inch by 1/2 inch profile. Fastener holes are the other thing to check: the 252 comes with #10 x 1-1/2 inch wood screws, and old holes in the sill rarely line up, so expect to drill fresh ones.
8) Can I run the same threshold across every door in a school or medical facility?
The 252 half saddle is one profile that covers both cases most facilities run into: it is UL 10C positive-pressure listed and built to ANSI/BHMA A156.21, so it goes on the rated corridor and stair doors, and its 1/2 inch rise holds the ANSI/BHMA A117.1 accessibility limit on the rest. Cut-to-order lengths from 24 to 185 inches mean the narrow janitor closets and the wide double openings take the same part number in a different length, which keeps one saddle and one finish across the building instead of three.
9) Can the Pemko 252 threshold be thermally broken for an exterior entrance?
The 252 extrusion has an integrated channel that accepts thermal keys, which is how the series picks up better thermal performance at the sill on an exterior opening. That matters on a perimeter entrance where the saddle is a straight aluminum path between conditioned space and outside air. The keys are a separate item from the threshold itself, so specify them alongside the 252 rather than assuming they come in the box.
How fast can I get the Pemko 252D 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 252D 36 come with a warranty?
Absolutely. The Pemko 252D 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 252D 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 252D 36 from ZenSupply?
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