At GlassNPane, our goal is to educate our customers with products we supply. In the world of Tub Sliders, known as Tub and Shower doors, are made of a metal frame that runs along the bottom and the two vertical sides of the unit. The two glass doors slightly overlap, and either roll or slide open. Usually there is also a metal track running horizontally along the top to stabilize the door movement and to reduce rattling. We call these Tub/Shower Sliders. There are pros & Cons Low-cost bypass door units can be found. The Advantages are relatively easy to install and no special skills needed. A more “forgiving” install than swinging door units, especially for “Do it Yourself” remodelers. They usually offer towel bars on doors. Some Disadvantages are bottom track collects water and grime, and will need frequent cleaning. Sliding/rolling action may become loose over time and require maintenance.