The P0322Uw 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 U2230-White Are 17' X 17 1/2' X 7 1/2' And Requires An 18' 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.