SimplyCopper 18" x 11-1/2" oval Canoa design is a unique design piece, created of 18-gauge copper which is hand-hammered to provide a elegant look. The finish is done by firing a dark patina, then brushing to highlight the undertones of copper in the sink. This sink is installed as a vessel.SpecsModel: H-V-O-R-18-WBShape: OvalOutside Dimensions: 18" X 10-1/2" X 4" Center, 5-1/2" each endInside Dimensions: 18" X 10-1/2 X 4" Center, 5-1/2" each endEdge (Lip): Wire RimmedDrain Opening: 1-1/2" { Non-Overflow }Drain Sold SeparatelyDesign: Hand-Hammered SurfaceGauge: 18Material: CopperFinish: Brushed SedonaOverflow: NoInstallation Type: VesselWarranty: Limited LifetimeIncluded:(1) Copper SinkInstallation InstructionsCopper Sink CareWarranty InformationPlease 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