Blanco 440198 Diamond 1-1/2 Bowl Kitchen Sink, Metallic Gray Finish 80% solid granite, silgranit material features the touch and feel of Natural stone Required outside cabinet is 33 inch Flat deck is ideal for both drop-in and undermount installations Bowl depths are 9-1/2'' and 8 inch Limited lifetime warranty Overall: 33-Inch x 22-Inch Self Rimming or under mount installation Silgranit Left Bowl: 20-inch x 18-5/8-inch x 9-1/2-inch; Right Bowl: 6-inch x 16-3/4-inch x 8-inch Cutout size: 32-1/4-inches x 21-1/4-inches; Cutout corner radius: 5/8-Inches