ALFI brand AB510 30-Inch  Biscuit  Contemporary Smooth Fireclay Farmhouse Kitchen Sink Bottom Width:29 1/2" Top Width 29 7/8" . This sink tapers from top to bottom by 1/4" 3 1/2" Rear Center drain Thickness: 3/4" Completely smooth apron all around Inner Dimensions 28 1/8" x 18" x 9 1/8"