Nantucket Sinks ZR-PS-3220-16 Pro Series Large Prep Station Single Bowl Undermount Stainless Steel Kitchen Sink with Included Rolling Mat, Grid, Colander and Drain, 32" Exterior Dimensions: 32" x 20 inch Interior Dimensions: 30 inch x 16 inch This sink is crafted from premium 304 stainless steel Ledges provide nesting for specially designed colander and rolling mat Bottom grid included with sink