Whitehaus Collection 10 gauge frame, 18 gauge heavy-duty industrial grade 304 series stainless steel rectangular above mount basin with matching drain, 10 gauge frame, noise reduction dampening pads, and full undercoating for soundproofing and protection against condensation. Stainless steel bath basins have near-zero radius corners for easy cleanup and allow for minimal buildup. They are all equipped with a center drain location and four diagonal groves for efficient draining.