Made of high grade stainless steel with 1.0mm-1.2mm in thinkness. Standard American dimension with high quality one-piece or seamlessly welding formed. Polished or Satin finish gives long lasting beauty. Full undercoated and firm pads on sides and bottom of the bowls for sound deadening , moisture proofing and anti-vibration. Includes Standard template cardboard and fastening clips . Item:SS-8103 Dimension:31-5/8" x 20.5" Deep:9"/8" Thickness:18 Guage meterial:304(18/8) Finish:satin,polish Discription:3-1/2"(114)drain opening