Single compartment self rimming drop-in sink with faucet ledge and Drainboard. 18 gauge (1.2 mm), type 316 (EN1.4401 17/12/2) stainless steel. Exposed surfaces are #4 satin finished. Undercoated to reduce condensation and resonance. Waste fittings included. Certified to ASME A112.19.3-2008 / CSA B45.4-08. Note: Please allow 4 weeks for delivery. Drainboard is located to the left of sink bowl and is sloped for drainage. Center waste location. Includes 3 1/2" (89 mm) crumb cup strainer with 1 1/2" (DN38) brass tailpiece.