Belle Foret BFF3KITBI Apron Front Single Bowl Fireclay Kitchen Sink, Bisque 23-1/2-Inch by 18-3/4-Inch Undermount Bowl: 21-1/2-Inch by 15-3/4-Inch by 7-Inch 3-1/2-Inch drain opening Requires BFNKBS1 3-1/2-Inch basket strainer