Pemko 252X3AFG36 Thermal Barrier Saddle Threshold 36in

Product Description

The PEMKO 252X3AFG36 is a thermal barrier saddle threshold with Frost Guard protection, finished in mill finish aluminum. Designed for exterior doorways, it creates a sealed transition at the base of the door to reduce air infiltration and thermal transfer. The threshold measures 36 inches in length, 5.5 inches in width, and 0.5 inches in height, making it suitable for standard single-door openings. At 2.7 pounds, the aluminum construction keeps the unit lightweight without sacrificing structural integrity. This product is installed by door and hardware specialists, general contractors, and skilled tradespeople working on commercial or residential building envelope applications.

The 252X3AFG36 is appropriate for exterior door installations where thermal performance and moisture management are priorities. The Frost Guard feature is specifically engineered for cold-climate environments, helping prevent frost accumulation at the door base. Mill finish aluminum provides a clean, neutral appearance compatible with a wide range of door frame finishes. This threshold is sold as a single unit and suits both new construction and retrofit door projects requiring a low-profile, durable saddle-style transition.

Key Features

• Thermal barrier construction reduces heat transfer at the door base
• Frost Guard protection addresses frost buildup in cold-climate installations
• Mill finish aluminum provides corrosion resistance and a neutral appearance
• Low-profile 0.5-inch height minimizes trip hazard at the threshold
• 5.5-inch width provides broad coverage across the door sill area
• Lightweight aluminum build at 2.7 pounds simplifies handling and installation

Compatibility

Designed as an OEM-style replacement or new-installation saddle threshold for standard 36-inch exterior door openings in residential and light commercial construction.

Installation Notes

Installation is typically performed by door hardware installers or general contractors as part of door frame assembly or replacement work. The door should be in the open position and the existing threshold removed before fitting the new unit. Fasteners are typically driven through the threshold base into the subfloor or sill framing — verify substrate material before selecting fastener type. Confirm local building code requirements for thermal envelope continuity where applicable.