Sterling 48" W. x 34" D. Advantage white seated 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. Drain not included. Must be used with Sterling wall set Model No. 62034100-0 (SKU 481688). The finished shower unit is 48" W. x 34" D. x 72" tall. Sterling Vikrell shower systems assemble with a tongue and groove system that minimizes the need for caulk. Use sterling doors model No. SP5965-46S-G06 (SKU 444273). Sterling Vikrell fixtures are backed by a 10 year consumer warranty.