The TR29 is a single basin, filling the size gap between the 3120S and the 1823 basins. As with all 3/4" radius sinks, the walls are straight and the corners tight; but slightly rounded for cleaning convenience and high style. Made from one piece of 304-grade stainless steel, its brushed satin finish hides minor scratches that could occur over time. It's available in three thicknesses: standard 18, heavy-duty 16, and a hefty 14 gauge. The overall dimensions of the TR29 are 28 1/8" x 17 7/8" x 9 3/8" and a 30" minimum cabinet size is required. Covered by our limited lifetime warranty, your satisfaction is guaranteed. All of our stainless steel sinks are completely insulated and come with sound dampening pads to prevent condensation and reduce noise.