Pemko 157 Series Fire-Rated Of...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$72.27
$60.35
Pemko 157 Series Fire-Rated Offset Saddle Threshold cross-section diagram showing 5-1/2" width and 3/4" height dimensions

Pemko 157 Series Fire-Rated Offset Saddle Threshold 5-1/2" x 3/4" Aluminum

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Model: 157A 36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$72.27
$60.35
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Pemko 157 Series Fire-Rated Offset Saddle Threshold — 5-1/2" x 3/4" Aluminum

The Pemko 157 Series Offset Saddle Threshold is a fire-rated aluminum threshold engineered for commercial door openings where floor surfaces meet at a 1/2" height offset — tile to carpet, concrete to resilient flooring, or similar transitions. At 5-1/2" wide and 3/4" tall, it covers the full transition zone cleanly while maintaining a low-profile saddle profile that meets ADA and code requirements for commercial egress doors.

Fire Rating & Code Compliance

  • UL 10C Positive Pressure Listed — qualifies for use in positive-pressure fire-rated door assemblies
  • UL 4L10 Listed — meets construction requirements for fire-rated assemblies
  • ANSI/BHMA A156.21 — compliant with the commercial threshold standard for door hardware

Technical Specifications

  • Width: 5-1/2"
  • Height: 3/4"
  • Height Offset: 1/2"
  • Material: Aluminum
  • Available Finishes: Mill Finish Aluminum (157A), Dark Bronze Anodized Aluminum (157D)
  • Available Lengths: 36", 48", 72", 84" (standard); custom lengths 24" minimum to 185" maximum
  • Fasteners: #10 x 1.5" wood screws standard; other fastener options available
  • Weight: 0.93 lbs per unit

Typical Applications

  • Commercial office buildings and tenant fit-outs
  • Healthcare facilities and hospitals
  • Educational institutions
  • Retail and hospitality
  • Government and municipal buildings
  • Multi-family and mixed-use residential
  • Industrial and warehouse facilities

Why Pemko 157 Series

Pemko is the specification-grade threshold brand of choice for architects, contractors, and facility managers. The 157 Series ships in standard lengths or cut to your exact opening — up to 185" — so you order once and install without field modification. UL 10C and UL 4L10 listings are documented and verifiable, making submittal packages straightforward for fire-rated door assemblies.

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Commercial Thresholds
Commercial/Residential:
Commercial
Product Model:
157
Product Dimension:
W: 5-1/2", H: 3/4"
Product Substrate:
Aluminum
Product Category:
Door Trim and Accessories
Department:
Door Hardware
Series:
157 Series

Pemko 157A 36 – Frequently Asked Questions

1) What is the Pemko 157 series offset saddle threshold used for?
The Pemko 157 series provides weathersealing and smooth transitions for doors with height differences between floors. The offset saddle design accommodates uneven surfaces while maintaining proper door clearance.
2) What door widths does this 5-1/2 inch threshold accommodate?
This threshold fits standard residential and light commercial door openings. Verify your door opening width against the threshold length before ordering. Most standard doors require 36-42 inch threshold lengths.
3) How do you install the Pemko 157 offset saddle threshold?
Install using appropriate fasteners through pre-drilled holes. Ensure proper drainage slope and seal gaps with compatible caulk. Follow manufacturer installation template for precise positioning and fastener locations.
4) What materials and finishes are available for the 157 series?
Pemko 157 thresholds come in mill aluminum and various anodized finishes. Standard options include clear anodized, dark bronze, and black. Check specific product listings for available finishes and materials.
5) Does this threshold meet ADA compliance requirements?
The 3/4 inch height may exceed ADA guidelines for some applications. Check local accessibility codes and consider ramped threshold options for ADA compliance. Verify requirements with your local building authority.
6) Can you cut the Pemko 157 threshold to fit custom widths?
Yes, aluminum thresholds can be cut to length using appropriate metal cutting tools. Use proper safety equipment and deburr cut edges. Maintain proper end sealing after cutting to prevent water infiltration.
7) What weatherstripping works with the 157 series threshold?
Compatible weatherstripping includes door bottom seals and adjustable door shoes. Check our weatherstripping collection for Pemko door bottom seals that work with offset thresholds.
8) How much floor height difference can this offset threshold handle?
The offset design accommodates moderate height differences between interior and exterior floors. Check manufacturer specifications for exact offset measurements and ensure proper door clearance during operation.
9) What maintenance does the Pemko 157 threshold require?
Clean regularly with mild detergent to remove dirt and debris. Check drainage weep holes for blockages. Inspect caulk seals annually and re-seal as needed to maintain weatherproofing.
10) Are there similar Pemko threshold models for different applications?
Pemko offers various threshold profiles including flat saddles, ramp thresholds, and thermal break models. Browse our Pemko collection for alternative threshold designs and heights.
11) What fasteners are recommended for threshold installation?
Use corrosion-resistant screws appropriate for your substrate. Concrete applications require masonry anchors. Wood substrates need wood screws with adequate length and thread engagement for secure attachment.
How fast can I get the Pemko 157A 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 157A 36 come with a warranty?
Absolutely. The Pemko 157A 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 157A 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 157A 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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