Blanco 516319 Precis 16-Inch Equal Double Bowl Sink, Metallic Gray Drain not included Cutout size: template provided with approximate 1/8'' reveal Required outside cabinet: 33 80 percent Solid granite ; Drain groove design not available on this model. Heat resistant up to 536f 80% Solid granite, Silgranit material features the touch and feel of natural stone Required outside cabinet is 33" Unsurpassed cleanability backed by industry leading 7 patents Bowl depths are 8" Limited lifetime warranty