The PR123-18 offset double bowl undermount sink is constructed from 18 or 16-gauge, Stainless Steel. 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 PR123 are 31 3/4" x 20 7/8" 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.