This UPC Certified offset double bowl undermount sink is made of high quality 18 gauge SUS304 Stainless Steel. The offset bowls are sized to easily complete tasks in each bowl simultaneously. The large (left) bowl measures 15-3/4'' L x 18-3/4'' W x 9'' D and the small (right) bowl measures 13'' L x 16-5/8'' W x 7-1/2'' D, and offset sink drain with a diameter of 3.5'' helps with quick drainage. A strong and quiet sink featuring an added layer of insulation on the bottom to reduce sound and reinforced plates on the sides and bottom help prevent bending and buckling. The brushed satin finish is easy to clean and helps camouflage small scratches that could appear overtime of daily use. Strainer (STRAINER-200) is sold separately.