Bring sleek sophistication to your kitchen workspace with the KOHLER Undertone Undercounter 31-1/2 in. x 17-3/4 in. Single Bowl Kitchen Sink, constructed from 18-Gauge stainless steel for long-lasting performance. The large basin features the SilentShield insulating technology to ensure a quiet performance, reducing vibration from running water and dishes, as well as disposal noise. Size: 9 In.