Pemko 253 Series Half Saddle T...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.65
$48.83
Pemko 253B Half Saddle Threshold - Mill Finish Extruded Bronze (Brass), 3" Width 1/2" Height, Fire Rated Commercial Door Transition

Pemko 253 Series Half Saddle Threshold 3" x 1/2" Aluminum & Bronze Fire Rated

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Model: 253D 36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$58.65
$48.83
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Pemko 253 Series Half Saddle Threshold - Fire Rated Commercial Door Transition

The Pemko 253 Series Half Saddle Threshold delivers a code-compliant, fire-rated floor transition for commercial openings with a 1/2" height offset and 3" width. UL 10C positive pressure listed and BHMA A156.21 certified, it is engineered for demanding applications where fire rating, ADA accessibility, and long-term durability are non-negotiable. Available in Mill Finish Aluminum, Dark Bronze Anodized Aluminum, and Mill Finish Extruded Bronze (Brass) in 36" and 72" lengths.

Key Features

  • Fire-Rated Construction: UL 10C positive pressure and UL 4L10 listed for use in fire-rated door assemblies - meets code in commercial, institutional, and government applications.
  • BHMA Certified: ANSI/BHMA A156.21 certified for professional-grade threshold performance and durability.
  • ADA Compliant: 1/2" height offset meets ADA accessibility requirements when properly installed.
  • Integrated Thermal Key Channel: Built-in channel accepts thermal keys for improved energy efficiency and weather sealing at the door sill.
  • Modular Design: Two half saddles can be combined to create custom-width configurations for non-standard openings.
  • Custom Cuttable: Maximum length 185"; minimum length 24" - field-cuttable to exact opening width.
  • Standard Fasteners Included: Ships with #10 x 1.5" wood screws; alternative fasteners available for concrete and hollow metal substrates.

Technical Specifications

  • Series: 253
  • Width: 3"
  • Height: 1/2"
  • Available Lengths: 36", 72" (custom cut to 185" max, 24" min)
  • Materials: Extruded Aluminum; Extruded Bronze (Brass)
  • Finishes: Mill Finish Aluminum (A), Dark Bronze Anodized Aluminum (D), Mill Finish Extruded Bronze/Brass (B)
  • Fire Rating: UL 10C Positive Pressure; UL 4L10
  • Certification: ANSI/BHMA A156.21
  • ADA: Compliant when properly installed
  • Fasteners: #10 x 1.5" wood screws included

Typical Applications

  • Commercial office buildings and tenant suites
  • Healthcare facilities and hospitals
  • Educational institutions (K - 12 and higher ed)
  • Government and municipal buildings
  • Retail and hospitality properties
  • Multi-family and mixed-use residential
  • Industrial and warehouse facilities

Why Pemko 253?

Pemko has been the specification-grade threshold standard for commercial construction for decades. The 253 Series combines fire-rated compliance, ADA accessibility, and field-adjustable sizing in a single extrusion - reducing the number of SKUs a contractor needs to stock while covering the widest range of commercial openings. When the door schedule calls for a UL 10C half saddle, the 253 is the answer.

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Commercial Thresholds
Product Model:
253
Product Dimension:
W: 3", H: 1/2"
Product Category:
Door Trim and Accessories
Department:
Door Hardware
Series:
253 Series

Pemko 253D 36 – Frequently Asked Questions

1) What is the Pemko 253 Series half saddle threshold used for?
The Pemko 253 Series creates a weather seal at door bottoms while providing smooth transitions between floor surfaces. The half saddle design works with inswing doors where space underneath is limited.
2) What door types are compatible with this threshold?
This threshold works with most inswing doors including wood, steel, and fiberglass. Verify door bottom clearance matches the 1/2 inch height. Check with door sweep or weatherstrip manufacturer for compatibility.
3) How do I determine the correct length needed?
Measure the door opening width from jamb to jamb. The threshold should fit snugly between door jambs. Standard lengths are available or field cutting may be required for custom fits.
4) What finish options are available for the 253 Series?
Pemko 253 Series typically comes in mill finish aluminum, dark bronze anodized, or clear anodized finishes. Match finish to door hardware and frame for consistent appearance.
5) Does this threshold meet building code requirements?
The 1/2 inch height generally complies with ADA accessibility guidelines for exterior thresholds. Verify local building codes for specific requirements. Some jurisdictions may have different height restrictions.
6) What accessories work with the Pemko 253 Series?
Compatible accessories include door weatherstripping and door sweeps. Check Pemko specifications for recommended sweep models that seal properly against this threshold profile.
7) How is the threshold installed?
Installation requires fastening to the floor with screws through pre-drilled holes. Use appropriate anchors for concrete or wood subfloors. Apply sealant under threshold edges to prevent water infiltration.
8) Can this threshold be cut to fit custom widths?
Yes, aluminum thresholds can be field cut with standard metal cutting tools. Use fine-tooth saw blade and file cut ends smooth. Apply touch-up finish to cut ends if needed.
9) What maintenance does this threshold require?
Clean regularly with mild soap and water to remove dirt and debris. Check sealant annually and reapply if cracking occurs. Inspect fasteners periodically and tighten if loose.
10) How does this compare to other Pemko threshold models?
The 253 Series offers a lower profile than full saddle thresholds while providing better weather protection than flat thresholds. Consider other Pemko threshold options for different height requirements.
11) What floor conditions work best with this threshold?
Works on level, solid surfaces including concrete, wood subfloor, and tile. Floor must be structurally sound to support fastening. Uneven surfaces may require shimming or leveling compound.
12) What are the key measurements for installation planning?
The threshold measures 3 inches wide and 1/2 inch high. Verify door clearance allows proper operation over the threshold. Check that door bottom seals make contact without binding during operation.
How fast can I get the Pemko 253D 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 253D 36 come with a warranty?
Absolutely. The Pemko 253D 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 253D 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 253D 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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