Chef Series 33 Inch Stainless Steel Premium 16 Gauge Smooth Flat Front Farm Apron Kitchen Sink 30/70 Double Bowl 15mm Radius Design with Free Accessories Crafted from high quality heavy duty 16 gauge premium grade certified 304 stainless steel Luxurious sound-deadening insulation pads and coating Elegant Satin Polished Finish unlike any other ordinary finishes - corrosion and scratch resistance Standard 3.5" drain opening. UPC, cUPC, CSA, IAPMO, ANSI and SCC Certified and Listed