16 Gauge Premium T-304 Grade Stainless Steel (18/10 Chromium/Nickel) Will Never Rust Or StainCommercial Grade Brushed Finish - Easy To Clean And Long-Lasting. Unlike Satin Finish, Our Brushed-Finish Hides Scratches And Matches Well With Your Kitchen Appliances.Heavy Duty Sound Proof Coating And Thick Rubber Padding - Minimizes Noise And Reduces CondensationExterior Dimensions: 33-5/8" (Wide) X 20-1/2" (Front-To-Back)Interior Dimensions: 13" X 16-1/2" (Left) , 17-3/4" X 18-1/2" (Right)Bowl Depth: 7" (L), 9" (R)Minimum Base Cabinet Size: 36"Standard 3.5" Drain Opening Will Fit Any Garbage Disposal Unit.Included In Box: Sink, Cut-Out Template, Mounting Brackets, Rinse Grids (Set Of 2), 2 Basket StrainersUpc And Cupc Certified By Iapmo To Meet Us And Canada Plumbing Standards Including Ansi And Csa.