The P3191UW porcelain undermount sink is made from true vitreous China which is triple glazed and triple fired to ensure your sink is durable and strong. Undermounting a bathroom sink creates a sleek look and allows for more space on your countertop. The overall dimensions for the U1913-white are 20 3/4" x 14 3/4" x 8 3/4" and requires a 24" minimum cabinet size. Pop-up drains in a variety of finishes are available with this sink model. As always, our porcelain sinks are covered under a limited lifetime warranty for as long as you own the sink.