The 512 half divide double bowl undermount sink is constructed from 304 grade stainless steel and is available in your choice of 18 or 16 gauge thicknesses. 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 512 are 32 1/2" x 18 1/8" x 8 1/4" and a 33" 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.