Add the glow of stainless steel to your kitchen, bath or bar with the Elkay Lustertone Undermount 18-3/8 in. x 18-3/8 in. Single Bowl Kitchen Sink. Made of high-quality, thick 18-Gauge, type-304 nickel-bearing stainless steel, this durable sink is protected by a heavy-duty Sound Guard undercoating for great sound dampening.