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

Amesbury  32689 T-Back, Foam Filled Bulb Weather Stripping 

This Weather Seal is used primarily on the bottom sash on vinyl Double Hung windows

Slides into a T-shape slot in the vinyl profile

Product Type: Foam Filled, Slide in 
Backing Type: T-Shape
Backing Width: .187 (4.76mm) 3/16 inch 
Bulb Diameter:  .450 (11.43mm)  29/64 inch
Color: Bronze or Black 
Length: Sold by the Foot, maximum 500-foot roll