STERLING 11449-NA Springdale 16-inch by 20-1/4-inch Under-mount Single Bowl Bar Sink, Stainless Steel This undermount design includes a 1/2" reveal or no-reveal option 8" Basin depth 3-3/4" Drain opening Made from 18 gauge stainless steel with a satin basin finish SilentShield, an exclusive sound-deadening system, reduces unwanted noise and vibration