Basin Size:15" x 15", Mounting System:U-Channel Mounting System Self-rimming sink without faucet deck, seamlessly formed of #18 gauge nickel bearing stainless steel. Exposed finishes are hand blended to a lustrous satin finish. Underside is fully coated to prevent condensation and deaden sound. Bowl recessed 3/16" below outside edge of sink. Coved Corners: 1" vertical and horizontal radius. Drain Opening: 3" Bowl Depth: 7-5/8"