Blanco 511-638 Diamond Single-Basin Drop-In or Undermount Granite Bar Sink, Metallic Gray Flat deck is ideal for both drop-in and undercount installations 80% solid granite Silgranit material features the touch and feel of natural stone Required outside cabinet: 17" Heat-resistant up to 536 degree and highly-resistant to scratching, staining and all household acids and alkali solutions Limited lifetime warranty Flat deck is ideal for both drop-in and undermount installations 80% solid granite Silgranit material features the touch and feel of natural stone Required outside cabinet: 17" Heat-resistant up to 536DegreeF and highly-resistant to scratching, staining and all household acids and alkali solutions Limited lifetime warranty