The M31ST-4 single bowl topmount sink is constructed from 304 grade stainless steel in a 18-gauge thickness. The surface has a brushed satin finish to help mask small scratches which may occur over time, keeping your sink looking beautiful for years. The overall dimensions of the M31ST-4 are 33" x 22" x 9 3/8" and a 36" minimum cabinet size is required. This sink features a 3 1/2" offset drain, sound dampening pads, and four pre-drilled faucet/accessory holes. As always, our stainless steel sinks are covered under our limited lifetime warranty for as long as you own the sink.