This fits your .
WSG3618SS Finish: Stainless Steel Features: -Included plastic feet to protect sink bottom. -Specially designed to fit Shaws kitchen sink. -Undermount sink bowl exposed for grid to fit properly. -Stainless steel construction. Product Type: -Sink Grids. Country of Manufacture: -United States. Material: -Stainless steel. Dimensions: Overall Height - Top to Bottom: -1.375". Overall Width - Side to Side: -32.625". Overall Depth - Front to Back: -14.63". Grid Hole Diameter: -5".
From the Manufacturer
Rohl WSG3618SS Wire Sink Grid for RC3618 Kitchen Sinks in Stainless Steel with Feet 32-5/8-Inch X 14-5/8-Inch.
Rohl WSG3618SS 32-5/8-Inch by 14-5/8-Inch Wire Sink Grid for RC3618 Kitchen Sinks in Stainless Steel - B000I598OG