SimplyCopper 18" Oval Copper Vessel Bathroom Sink with 3" Skirt SimplyCopper 18" x 15" timeless oval skirted design, created of 18-gauge copper which is hand-hammered to provide a rustic antiqued look. This copper sink can be used as either a partial-recess vessel or drop in. Outside Dimensions: 18' x 15" x 5-1/2" D Inside Dimensions: 16" x 13" x 5-1/2" D Apron : 3" Drain Opening: US standard 1-1/2" Drain Not Included Gauge: 18 Material: Copper Finish: Aged Copper Installation: Vessel