1.0mm-18 Gauge T-304 Stainless Steel:This is the same thickness and quality used in commercial kitchens, and is guaranteed not to chip, crack or blemish.Sound Dampening:Use a combination of rubber pads and sound absorbent acrylic undercoating that makes for a very quiet dishwashing experience.Extra Deep Basins:210mm deepthhave plenty of room for washing large pots and pans -Installation Type: Undermount (sink is mounted via included steel clips which affix to the underside of the counter) -Sink Height: 220 (measured from bottom most to top most point on sink) -Overall Length: 420(measured from the left outer rim to the right outer rim) -Overall Width: 420(measured from the back outer rim to the front outer rim) -Basin Depth (Right) 210 (measured from the center of basin to the rim) -Packing :47.0 * 47.0 * 23.0 ( cm ) -Model:LS-4280D P.S:All the kitchen sink we sold --drain and downcomer included free!!!