Transolid RUDE3118-01 Radius 31.75-in x 19.125-in x 9.5-in Granite Double Equal Undermount Kitchen Sink, White Granite Material made by the union of 80% quartz and 20% high-performance, UV-stable acrylic resin Overal Dimensions: 31.75" x 19.125" x 9.5" ; Inner Dimension of both bowls: 13.875" x 16.375" x 9"; Minimum Cabinet Size: 33" Undermount installation for seamless visual flow from the counter-top to the sink. This sink is designed and engineered in Italy and comparable to Elkay ELGU3322WH0, Swan QUSQ-3322.075, Blanco 516320, and Houzer M-200U CLOUD sinks with at least 30% better thermal and impact resistances. 2 Basket strainers required (not included) for standard 3.5" rear drain locations in each bowl which provide extra usable space under the cabinet