The T1515 single bowl topmount sink is constructed from 304 grade stainless steel and is available in 20 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 T1515 are 15" x 15" x 6 1/4" and an 18" minimum cabinet size is required. This sink contains a 3 1/2" centered 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.