This bathroom sink features a Black durable vitreous china construction in a sleek rectangular undermount design. With a contemporary form, this vanity sink is constructed for durability and easy cleanup. This sink features an overflow hole to prevent excessive filling. • Glossy Black Undermount Vitreous China Sink • Outside Dimensions: 21" x 14-1/2" x 8-1/2" • Inside Dimensions: 18-1/4" x 12" x 6-1/4" • Minimum Cabinet Size: 23" • True Vitreous China • Cardboard Template included • Mounting Clips Included • Limited lifetime warranty • cUPC Certifed