Onyx, Single Bowl, Granite Composite Sink, 9" Deep, Overall Sink Size 22" x 25", Bowl Size 15.75" x 21.375" x 9" & Features A Rear Drain, Granite Will Not Scratch, Stain, Scorch Or Chip, 1 Predrilled Hole For Faucet & 3 Additional Holes Can Be Knocked Out, Installation Is Safe & Easy, Includes Template & Hardware, Professional Installation Recommended For Undermount Application, Minimum Cabinet Size Recommended Is 36", Top Mount Or Undermount, Limited Lifetime Warranty.