Pemko 252FG Series Thermal Bar...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$75.38
$71.02
Pemko 252FG Series Thermal Barrier Threshold with ThermoSeal Insert Half Saddle Design

Pemko 252FG Series Thermal Barrier Threshold with ThermoSeal Insert Half Saddle Design

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Model: 252 x 2AFG 36
$75.38
$71.02
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$75.38
$71.02
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Pemko 252FG Series Thermal Barrier Threshold with ThermoSeal Insert Half Saddle Design

Professional Thermal Barrier Door Threshold Solution

The Pemko 252FG Series Thermal Barrier Threshold delivers superior thermal performance with its innovative half saddle design featuring 1-1/2"; by 5-1/8"; ThermoSeal insert configuration. This professional-grade aluminum threshold incorporates a rigid polypropylene thermal break key that minimizes hot and cold temperature transfer, while the 2"; half saddle portion provides versatile installation options for commercial door applications requiring 5/8"; door clearance. The design is ADA accessible when butted to a 1/4"; offset for compliant threshold installations.

Professional Features & Benefits

  • Thermal Break Technology: Rigid polypropylene key between extrusions provides effective thermal barrier, minimizing transfer of hot and cold temperatures for improved energy efficiency.
  • Versatile Half Saddle Design: Features 2"; half saddle portion on one side with 1-1/4"; w x 7/8"; h bumper seal configuration for flexible installation options.
  • Professional Door Clearance: Designed to allow 5/8"; door clearance for proper door operation and sealing effectiveness.
  • ThermoSeal Insert System: Includes ThermoSeal insert with optional Pile Brush (P) and Eco-V (V) configurations available for customized sealing performance.
  • ADA Accessibility Compatible: ADA accessible when butted to a 1/4"; offset for compliant threshold installations.
  • Modular Configuration Options: Can be used with other half saddles to create custom size and configuration saddles for specialized applications.
  • Integrated Thermal Channel: Features integrated channel for connecting thermal keys and use with surface applied vertical rod exit devices.
  • Non-Welded Construction: Threshold design eliminates welding for consistent performance and appearance across the installation.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Model: 252 x 3
  • Product Subgroup: Door Thresholds
  • Product Substrate: Aluminum
  • Product Type: Thresholds - Insert
  • Subcategory: Thresholds

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Thermal Performance Design

The 252FG Series incorporates Frost Guard technology with a black rigid polypropylene thermal break key that effectively minimizes temperature transfer between interior and exterior environments. This thermal barrier system enhances building energy efficiency while maintaining proper door sealing and ADA accessibility when properly configured.

Why Choose Pemko Quality?

Pemko 252FG Series thresholds deliver professional-grade thermal performance with aluminum construction and integrated thermal break technology designed for demanding commercial applications. The non-welded design ensures consistent appearance and performance, while the modular half saddle system provides installation flexibility for custom configurations. Engineered for reliable sealing and thermal efficiency where energy performance and door operation are critical.

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Thresholds - Insert
Product Model:
252FG
Product Substrate:
Aluminum
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Pemko 252 x 2AFG 36 – Frequently Asked Questions

1) Will the Pemko 252FG threshold work with my door undercut, and how much clearance does it need?
The 252FG is built to allow 5/8 inch door clearance, so the bottom of the door needs to clear the saddle by that amount for the seal to work and the door to swing. Measure from the finished floor at the opening before you cut the slab or set the frame. Get that wrong and the door either drags on the saddle or leaves a gap the ThermoSeal insert cannot close.
2) Is the Pemko 252FG thermal barrier threshold ADA compliant?
The 252FG is ADA accessible when butted to a 1/4 inch offset. That is the condition, not a blanket claim: set on its own without that offset detail, the accessibility claim does not hold. If you are specifying for a facility that has to meet accessibility requirements, the offset condition is part of the detail on the drawing.
3) Can I use the Pemko 252FG under a door with a surface vertical rod exit device?
Yes. The 252FG has an integrated channel for connecting thermal keys that is also intended for use with surface applied vertical rod exit devices, so the bottom rod and strike can be accommodated at the sill. That matters on exterior pairs where a fire exit or panic device latches at the threshold and a standard saddle would fight the bottom strike.
4) What widths and lengths does the Pemko 252FG threshold come in?
Two widths, 4-1/8 inch and 5-1/8 inch, each in five stock lengths: 36, 42, 48, 72, and 96 inches. Both widths are offered in mill finish aluminum and dark bronze anodized. The 36 and 42 inch lengths cover single door openings, 72 and 96 inch cover pairs or oversized openings, and anything in between you cut down on site.
5) How does a thermal break threshold like the Pemko 252FG differ from a plain aluminum saddle?
A standard aluminum saddle is one solid extrusion, and aluminum conducts, so the saddle itself carries heat and cold straight through the opening. The 252FG splits the extrusion in two and joins it with a rigid polypropylene thermal break key, which cuts that transfer. On an exterior opening in a heating or cooling climate that is the difference between a saddle that sweats and frosts and one that does not. On an interior door with no temperature difference across it, the thermal break buys you nothing and a plain saddle does the same job.
6) What is the ThermoSeal insert on the Pemko 252FG and can I get a different seal material?
The ThermoSeal insert is the sealing element that sits in the saddle and closes against the bottom of the door, supplied in a 1-1/2 inch by 5-1/8 inch configuration. Two alternate insert configurations exist in the 252FG family: Pile Brush, designated P, and Eco-V, designated V. Pile brush suits openings where sweeping debris and easier door operation matter; you specify the letter with the order.
7) My opening is 40 inches wide. Do I order a 42 inch threshold and cut it?
Order the 42 inch and cut it down. Aluminum threshold extrusions are field cut to the opening with a miter saw and a non-ferrous blade, and the 252FG comes in 36, 42, 48, 72, and 96 inch lengths for exactly that reason. Take the next length up from your rough opening, never the next one down.
8) What finishes does the Pemko 252FG threshold come in, and which holds up outside?
Mill finish aluminum and dark bronze anodized aluminum, both available across every stock length. Mill is the raw aluminum look and the usual choice on back of house and service openings. Dark bronze anodized is the anodized coating and is what gets specified on storefront and main entrances where it has to match bronze frames and hardware already on the building.
9) Is the Pemko 252FG threshold welded, and will pieces match across a building?
The 252FG uses non-welded construction, so there are no weld seams to grind, discolor, or telegraph through the finish. For a property manager or MRO buyer standardizing openings across a facility, that is why saddles ordered at different times look the same once installed, and it is why the same profile can be repeated on dozens of doors without a fabrication variable.
How fast can I get the Pemko 252 x 2AFG 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 252 x 2AFG 36 come with a warranty?
Absolutely. The Pemko 252 x 2AFG 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 252 x 2AFG 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 252 x 2AFG 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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