This vessel sink is constructed from true vitreous China and has a modern sleek design. • Matte Black Porcelain Vessel Sink • Inside DIMS: 15-3/8" x 15-3/8" x 4-1/8" • Outside DIMS: 16-1/2" x 16-1/2" x 5-1/2" • Limited lifetime warranty • A pop-up drain is required for this sink and is sold separately. A pop-up drain with no overflow is required for this sink.