The P5181Ow Porcelain Vessel/Overmount Sink Is Made From True Vitreous China Which Is Triple Glazed And Triple Fired To Ensure Your Sink Is Durable And Strong. An Overmounted Vanity Sink Is Traditionally Found In Most Bathrooms And Can Be Used With Any Type Of Countertops. This Sink Can Also Be Installed As A Vessel. The Overall Dimensions For The P5181Ow Are 19 7/8' X 16 3/8' X 7 5/8' And Requires A 21' 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.