CPS276 / CPS576 Finish: Antique Pictured in Brushed Nickel Features: -16 Gauge Hammered Copper.-IAPMO listed / cUPC certified.-Apron extends 3.5'' on sides.-Undermount installation. Dimensions: -Two 3.5'' Drains.-Outside dimensions: 33'' H x 22'' W x 10.5'' D.-Inside dimensions: 18'' H x 16.5'' W x 10'' D / 16'' H x 11.5'' W x 8'' D. Warranty: -Limited lifetime warranty.