ProCrylic high-gloss acrylic is mildew resistant, durable and makes cleaning easy. Bright white finish matches most porcelain finishes. Textured bottom. Built-in tri-layer base eliminates the need for mortar bed, saving time and money. Easy to handle smooth backing with no gloves required. Professional direct-to-stud installation. Uses standard shower stall drain with 4-1/4 In. strainer. 10 year limited residential warranty, 1 year commercial warranty. Shower base only - wall set not included.