Blanco 441295 Diamond Bar Sink, Silgranit II Sink, Truffle Flat deck is ideal for both drop-in and under mount installations 80% solid granite silgranit material features the touch and feel of Natural stone Required outside cabinet: 15 inch Heat-resistant up to 536 degree f and highly-resistant to scratching, staining and all household acids and alkali solutions Limited lifetime warranty 80-percent rock hard granite Bowl depth 8-Inch Outside dimensions 15 inches by 15 inches Truffle Drain width 3-1/2 inches