Uncompromising quality, beauty and functionality make up this Premier 20-Inch Hammered Copper Single Basin Sink. This sink is perfect for a kitchen prep area, bar, or a kitchenette setting. Green recyclable products like copper sinks are a must have in today's modern home. Inner dimensions: 18-Inch by 14-Inch by 8-Inch, outer 20-Inch by 16-Inch by 8-Inch. Installation Type: under counter or surface-mount. The countertop depth measures 19-Inch front to back. Material gauge: Industry Best (14-guage or .0625-Inch). Drain size is 3.5-Inch.