The MB99-57 undermount sink is made from pure bronze with one piece construction. The one piece construction ensures a strong, durable sink that will last a long time and the sea shell details are sure to add charm to any bathroom. This bronze sink is finished with a beautiful antique patina that will help to disguise minor scratches or blemishes that occur over time. The overall dimensions for the MB99-57 are 21" x 16 1/2" x 5 3/4" with a centered drain and a 24" minimum cabinet size. As always, our bronze sinks are covered under a limited lifetime warranty for as long as you own the sink.