Elkay Harmony Lustertone Stainless Steel 40" x 20-1/2" Triple Basin Undermount Kitchen Sink Highest quality sink formed of 18 gauge nickel bearing stainless steel. Product Features: Undermount Triple basin Stainless steel Exposed surfaces are hand blended Underside of sink is fully protected by heavy duty Sound Guard undercoating to reduce condensation and dampen sound Product Specifications: Installation Type: Undermount Material: Stainless Steel Number of Basins: 3 Minimum Cabinet Size: 45" Sink Dimensions: 40" L x 20-1/2" W Bowl Depth: 9-7/8" Left Bowl Dimensions: 14" L x 18" W x 9-7/8" D Center Bowl Dimensions: 7-1/2" L x 15-3/4" W x 5" D Right Bowl Dimensions: 13-1/2" L x 16" W x 7-7/8" D Faucet Holes: 0 Drain Size: 3-1/2" Ship Wt: 30 lbs Product Certifications and Compliances: ASME 112.18.1/CSA B125-01 IAPMO Listed