Decor Star P-004 23 1/4 Inch x 21 Inch Undermount Single Bowl 18 Gauge Stainless Steel Kitchen Sink cUPC Corrosion & stains resistant 18-gauge premium grade t-304 stainless steel construction Scratch-resistant premium satin finish Sound dampening pads & undercoated insulation for noise reduction UPC, cUPC Certified. Mounting hardware, installation guide & template included Limited Lifetime Manufacturer Warranty w/ US Based Customer Service.