These shower door bottom guides are constructed of injection-molded plastic and come clear in color. Each guide includes a strip of double sided adhesive tape to allow for ease of installation. The channels feature 1/2 in. wide openings that will allow for use with up to 1/2 in. thick glass panels. Use of these snap-in bottom-mount guides will help keep hanging glass panels aligned in their respective tracks. They are easy to install and are used by a variety of tub and shower door manufacturers.