Used on the rear windows of many early Spartanettes. Wiper shaped and extends out from edge of steel window frame. Fits steel rounded corner windows only. Made of black silicone rubber. The "T" portion of the gasket is 9/32" thick (or just a bit over 1/4") and the overall height of the gasket is 7/8". 15-feet per package. Also used on many pre-war steel frame windows with radiused corners and some early post-war trailers, like the 1948 Alma Silver Moon.