Sterling 32" W. x 34" D. Advantage white shower bases are made of Sterling's exclusive Vikrell material with swirl gloss finish. Vikrell is a sheet molded compound that is solid color throughout and stronger than fiberglass. The base features a lightly pebbled slip-resistant bottom for safer footing. These bases can be used with tiled in applications or with the Sterling Advantage shower wall sets; back wall Model No. 62012100-0 (SKU 473804) and end walls Model No. 62015100-0(SKU 473812) when used with our back wall and end walls the finished shower unit is 32" W. x 34" D. x 72" T. Sterling Vikrell shower systems assemble with a tongue and groove system that minimizes the need for caulk. Use Sterling doors Model No. 950C-30S (SKU 417310) or 1500D-31S (SKU 412850) when installed with Sterling wall components. Sterling Vikrell fixtures are backed by a 10 year consumer warranty.