The P2181Uw Rectangular 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 U1812-White Are 21 1/2' X 14 1/8' X 6 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.