Seamlessly formed from 18-gauge, type 304 nickel-bearing stainless steel, this LustertoneUndermount Single Bowl Sink Without Reveal is top-quality! It measures 30.5 In. x 18.5 In. x 10 In. overall, with bowl dimensions of 28 In. x 16 In. x 10 In. and a 3.5 In. drain opening. All exposed surfaces are hand-blended to a lustrous highlighted Lustertone satin finish with a highlighted inside top bowl radius; the underside of the sink is fully protected by heavy-duty Sound Guard undercoating to deaden sound and reduce condensation.