Franke USBSK800-18 Single Bowl Stainless Steel 21x17in. Undermount Sink Single bowl measures 15 3/8 inches x 19 3/8 inches x 8 inches The perfect size for the second sink in your kitchen 18 gauge stainless steel construction for under mount installation Under mount installations for solid surface countertops Professional installation recommended for this application Template and hardware included Limited Lifetime Warranty