The bottom of a shower is known as a shower pan, shower base or shower tray. These pans are designed to safely support the pressure and weight of people as they shower every day and properly contain and drain water and cleaning substances. Shower pans can be made of several types of materials, but acrylic and fiberglass are two of the most common. Fiberglass shower pan is a quick and relatively cheap shower floor. If you are installing a new shower, fiberglass shower pans can be used with ceramic tile walls or with fiberglass walls that match the floor. Often the pans are used in handicapped access showers so there is little or no curb and a special non-skid surface. Compared to traditional masonry shower pan construction, fiberglass shower pan options have advantages. The advantages are: easier to install, quicker, cheaper, easy to keep clean.