Wall hung basin. Center back waste location. 18 gauge (1.2 mm), type 304 (CNS 18/10) stainless steel. Exposed surfaces are #4 satin finished. Radius coved bowl corners. One piece wall hanger. Includes 1 1/2" (38 mm) duplex waste assembly with rubber stopper. Certified to ASME A112.19.3-2008 / CSA B45.4-08. Separate sink carrier is not required.