Universal Clear Polycarbonate U-Channel with Magnet for 3/16" and 1/4" Glass Shower Doors and chrome strike plate. Can be used for 3/16" and 1/4" running inline hinged shower door or fixed panel. Length: 3" Glass Thickness: 3/16" and 1/4" Installation Instructions: Place the rubber gasket for the strike plate over the edge of the glass on the desired area and apply the U-Channel over the gasket (this may be a tight fit). If the u-channel does not fit over the gasket, you can remove the gasket and use clear silicone to secure the u-channel. Snap clear polycarbonate u-channel with magnet onto the fixed panel or a door. Package include: Polycarbonate U-Channel with Magnet and Aluminum U-Channel with metal strike plate