KOHLER K-3352-L-NA Undertone High/Low Undercounter Kitchen Sink, Stainless Steel A large, deep basin and smaller disposal basin designed for the flow of work in the kitchen Exterior dimensions: 31-1/2-Inch x 18-Inch Interior dimensions: 29-1/4-Inch x 15-3/4-Inch Basin depth: L 5-1/2-Inch, R 9-1/2-Inch High/low basin sink