DreamLine SHBW-1241720-00 Shower Kit Enclosure Backwall Product type: Shower back wall kit. Color: White. 3 integrated soap or accessory shelves and 1 convenient corner foot rest Unique water tight connection of side walls and corner panel. Trim-to-Size design for shower enclosures wall dimensions 29 7/8"-40 1/2" W The acrylic wall systems are specially designed to be installed over existing solid surface not directly against the studs Shown with optional base. Can be combined with any NEO, SECTOR or QUAD (36" x 36") shower base Shower backwall kit dimensions: 29 7/8 to 40 1/2-Inch D x 29 7/8 - 40 1/2-Inch W x 72 7/8-Inch H