Premier Copper Products VO18SKDB 18" Oval Skirted Vessel Hammered Copper Sink Uncompromising quality, beauty and functionality Inner dimensions measure 16-Inch by 13-Inch by 6-Inch, outer 18-Inch by 15-Inch by 3-Inch Copper material gauge: industry best (16-Guage or 0.0500-Inch) Drain size is 1.5-Inch, non-overflow Handmade, 100-Percent recyclable and made of 99.7-Percent pure recycled copper