Smart Series™ Sink, undermount, 3-compartment, 16" wide x 20” front-to-back x 12" deep, 3-1/2" drain opening, 55-1/2” x 22-1/2" O.D. trim size, 18 gauge 304 stainless steel, (NOT FOR USE WITH STANDARD TABLES) (can be used as undermount on non-stainless tops)