The TOTO® 20 Inch Rectangular Undermount Bathroom Sink with CEFIONTECT features a modern shallow basin that is ideal for narrow countertops. It features a sleek rimless design and is made with durable vitreous china for long-lasting beauty. This sink is coated with TOTO's CEFIONTECT glaze that prohibits mold and debris from adhering to ceramic surfaces. This technology helps keep your sink cleaner for longer and reduces the number of harsh chemicals used for cleaning. Included: Sink, installation template, and mounting screw set for wood countertops. Purchase separately: Compatible faucet and drain. Mounting assembly THU410 is required for marble/granite type countertop installation and must be purchased separately.