Shower door track dimensions: Sliding shower door guide rail 3 inches long, 1-1/2 inches wide, a wall height of 9/16 inches. Our inner channel dimensions are 0.52 inches, designed explicitly for 7/16-inch glass. The appropriate dimensions will not take up too much of your time or space. Easy To Install: Shower door track rail, this glass shower door lower rail assembly is used to keep the shower door properly aligned , no special tools or skills required, sliding shower door bathtub enclosure made of extruded metal frame is very easy to install together. Material: The glass shower door hardware is black plastic structure, made of high quality material, not easy to be damaged, long service life. Good Friction And Wear Characteristics: this sliding shower door bottom rail The 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 good sound-dampening effects. It also runs quieter, making it ideal for showers in a quiet environment. Shower door track dimensions: Sliding shower door guide rail 3 inches long, 1-1/2 inches wide, a wall height of 9/16 inches. Our inner channel dimensions are 0.52 inches, designed explicitly for 7/16-inch glass. The appropriate dimensions will not take up too much of your time or space. Easy To Install: Shower door track rail, this glass shower door lower rail assembly is used to keep the shower door properly aligned , no special tools or skills required, sliding shower door bathtub enclosure made of extruded metal frame is very easy to install together. Material: The glass shower door hardware is black plastic structure, made of high quality material, not easy to be damaged, long service life. Good Friction And Wear Characteristics: this sliding shower door bottom rail The 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 good sound-dampening effects. It also runs quieter, making it ideal for showers in a quiet environment.