Blanco 440221-2 Diamond 2-Hole Double-Basin Drop-In or Undermount Granite Kitchen Sink, White 80% Solid granite, Silgranit material features the touch and feel of natural stone Required outside cabinet is 22" for drop-in, 33" for undermount. Flat deck is ideal for both drop-in and undermount installations Bowl depths are 9-1/2" Limited lifetime warranty