SimplyCopper 15” elegant round bowl design, created of 18-gauge copper which is hand-hammered to provide a rustic antiqued look. The finish is done by firing a dark patina, then brushing to highlight the undertones of copper in the sink. This copper sink is installed as a drop- in .. Specs Model: CS-R-15-DI-BS Shape: Round Outside Dimensions: 15 x 5-1/2" D Inside Dimensions: 13" x 5-1/2" D Edge (Lip): 1" Rolled Drain Opening: 1-1/2" { Non-Overflow } Drain Included Design: Hand-Hammered Surface Naturally Antimicrobial Gauge: 18 Material: Copper Finish: Brushed Sedona Overflow: No Installation Type: Drop-In Warranty: Limited Lifetime Included: (1) Copper Sink (1) Faucet (1) Drain Installation Instructions Copper Sink Care Warranty Information Please Note: Each sink is handmade by Skilled Artisans. Our sinks are unique and one of a kind. You will use the sink as your template as dimensions can vary slightly due to the handmade nature. Variations in the patina are normal and not considered to be a defect. We recommend a professional for installation. Use only mild soap and water with a soft cloth for cleaning.