Shower door plastic track dimensions: The sliding shower door plastic track measures 3 inches in length, with a wall height of 9/16 inches and a track slot width of 1/2 inch. This track is compatible with glass up to 7/16 inches thick, and its suitable dimensions will not take up too much time or space. Material: Gray plastic structure, made of high-quality material, not easy to damage, long service life. Easy To Install: Shower door track rail. This glass shower door lower rail assembly keeps the shower door adequately aligned; no special tools or skills are required. Sliding shower door bathtub enclosure made of an extruded metal frame is very easy to install together. Good Friction And Wear Characteristics: this sliding shower door bottom rail plastic has a low static and dynamic coefficient of friction, and the material is wear-resistant. This helps to extend the service life of the guide. Easy To Use: This is the best alternative to glass shower door rail components. It is easy to install, dampens vibrations, and has sound sound-dampening effects. It also runs quieter, making it ideal for showers in a calm environment.A