The Tile Redi P3648C-PVC Redi Base 48" x 36" Rectangular Shower Base in Nickel is a high-quality shower base designed for tile installation. Made of durable polyurethane material, this base is compatible with certain Tile Redi models and includes a California Prop 65 Warning. With dimensions of 48 inches in length and 36 inches in depth, this shower base is a practical and stylish addition to any bathroom. Designed in the United States by the trusted brand Tile Redi, this product ensures a seamless and secure tile installation process.