Stainless steel wall-mounted hand sink with backsplash and side walls, 3 1/2" drain that adapts to 1 1/2" drain pipe, mounting bracket with two 1" holes in the basksplash for a 4" wall mount faucet. Certifiedto ASME A112.19.3 / CSA B45.4 and ASME A112.18.2 / CSA B125.2.