The Pemko 252 x 3_FG Thermal Barrier Threshold is a 5″ x 1/2″ saddle threshold designed to improve thermal performance for doors. Specifically, a black rigid polypropylene key, called the Frost Guard (FG), acts as a thermal break. As a result, it reduces the transfer of hot and cold temperatures, keeping interiors more comfortable. Additionally, the threshold is available in aluminum, brass, and stainless steel, which ensures durability and long-lasting performance.

Moreover, it can be used with surface-applied vertical rod exit devices or as a bottom door stop and seal. Because it provides 5/8″ door clearance, it allows smooth door operation. Furthermore, the non-welded design and integrated thermal key channel make installation simple and flexible. Overall, it is an effective solution for energy-efficient buildings while supporting ADA accessibility.

Key Features

• Frost Guard thermal break to minimize heat and cold transfer
• 5″ wide saddle threshold with 1/2″ height
• Integrated channel for thermal keys
• Compatible with vertical rod exit devices or as a bottom seal
• Non-welded construction for flexibility
• 5/8″ door clearance
• ADA accessible if butted to a 1/4″ offset
• Can be paired with other half-saddles to create custom configurations
• Available in aluminum, brass, and stainless steel

Benefits

• Enhances thermal performance to reduce energy loss
• Improves interior comfort by limiting heat and cold transfer
• Durable and long-lasting construction
• Flexible installation options for commercial and institutional doors
• Supports ADA accessibility

Specifications

• Base Material: Aluminum, Brass, Stainless Steel
• Fasteners: WS #10 x 1.5″
• Minimum Length: 24″
• Maximum Length: 185″
• Width: 5″
• Overall Height: 1/2″

Applications

• Exterior doors requiring thermal control
• Interior doors in energy-efficient buildings
• Commercial and institutional doorways

Finish Available