The P309 Single Bowl Undermount Sink Is Made From 99% Pure-Mined Copper. It Is Comprised Using One Piece Construction, Giving You A Very Strong And Durable Copper Sink. Since Copper Is Naturally Anti-Bacterial And Stain Resistant, It Is Great For Busy Households That Benefit From Low-Maintenance Materials. The Hammered Finish Looks Great And Provides A Mask For Small Scratches That May Appear Over Time. The Overall Dimensions Of The P309 Are 33' X 22' X 9 1/2' And A 33' Minimum Cabinet Size Is Required. The Sink Contains A Centered 3 1/2' Drain Opening And Copper Strainers And Flanges Are Available. The Hand-Crafted Copper Details Are Sure To Add Warmth And Richness To Any Decor.