.187 T-Slot Backing .450 Foam Filled Offset Bulb Weather Stripping

.187" T-Slot Backing, .450" Foam Filled Offset Bulb Weather Stripping

This Amesbury T-Back foam filled bulb weather stripping is designed for use primarily on the bottom sash of vinyl double hung windows. It features a slide-in installation, fitting into a T-shaped slot along the vinyl window profile to create a reliable and energy-efficient seal. The foam-filled bulb compresses easily, filling gaps and helping to reduce air and water infiltration, which can improve window performance and interior comfort.

The weather stripping is constructed with a durable foam-filled offset bulb for long-term resilience and flexibility. It has a T-shape backing that measures 3/16" (0.187", 4.8mm) wide, making it suitable for standard .187" T-slots found on many double hung window brands. The bulb diameter is .450" (29/64", 11.4mm), providing strong sealing capability for bottom sash applications.

Available in bronze or black to match or complement window profiles, this product is sold by the foot and can be supplied in continuous rolls up to 500' (152.4 meters) in length. This allows for flexibility in replacing just a single window, or the weatherstripping for your entire property.

Technical Information

• Product Type: Foam filled, slide-in weather stripping
• Backing Type: T-shape
• Backing Width: 0.187" (3/16", 4.8mm)
• Bulb Diameter: 0.450" (29/64", 11.4mm)
• Material: Foam-filled bulb
• Colors: Bronze, Black
• Length: Sold by the foot, maximum continuous roll of 500' (152.4m)

Notes

• Suitable for most vinyl double hung windows requiring a .187" T-slot weather seal.
• Check color availability before ordering to match your existing window profile.
• Manufacturer: Amesbury Truth Hardware

Sold by the foot and cut to length as needed from bulk rolls. Rolls up to 500' are available for large projects. To ensure the correct fit, carefully measure your existing weather stripping and T-slot before ordering replacements.