Kohler K-5839-5U-FP Woodfield Smart Divide Undercounter Kitchen Sink with Medium/Large Basins and Five-Hole Faucet Drilling, Caviar The Smart Divide(R) low profile basin divider (patent pending) offers ease of handling large items within the sink Constructed KOHLER(R) Cast Iron Exterior dimensions: 33"L x 22"W Interior dimensions: 15-5/8"L x 17-5/8"W (large basin), 11-3/8"L x 14-3/4"W (medium basin) Basin depth: 9"