The PTL1213 offset double bowl topmount sink is constructed from 304 grade stainless steel and is available in 18 gauge thickness. The surface has a brushed satin finish to help mask small scratches that occur over time and keep your sink looking beautiful for years. The overall dimensions of the PTL1213 are 31 1/2″ x 20 1/2″ x 9 1/4″ and a 33″ minimum cabinet size is required. This sink contains a 3 1/2″ offset drain, is fully insulated and comes with sound dampening pads. As always, our stainless steel sinks are covered under a limited lifetime warranty for as long as you own the sink.