CorStone® Model 31 Harmony Self Rim Double Bowl Corner Kitchen Sink made from a superior grade of acrylic. From the Advantage Series™, the Harmony is the perfect answer to practical use of counter space and lets you take advantage of every inch of counter. Great for kitchens with corner views or limited counter area, Harmony offers style and uniqueness to your kitchen. This sink easily adheres to the countertop with a bead of silicone - no clips to fuss with. Thick, durable acrylic surface provides high impact resistance and prevents marking and chipping.