This is a gray vinyl swinging shower door sweep made with a double Tee shaped insert at the top. The 2 Tee's at the top are 5/32 in. and 3/16 in. If your shower door needs the 5/32 in. Tee, just insert into the channel. If your door requires the 3/16 in. Tee, cut the 5/32 in. Tee off with a sharp blade. Before installing this shower door sweep make sure the channel is clean and clear of any obstructions.