CorStone was established in 1995 to develop, produce and market kitchen sinks and bath lavatories engineered and designed to offer brand name quality. Their products are both NAHB and CSA certified. As a company they have remained true to their core competency while researching opportunities for targeted growth into additional categories. This Advantage 3.2 Series Chepachet White 60/40 Double Bowl Self-Rim Kitchen Sink with decorative bowl detail. Its durable acrylic surface gives high impact resistance and prevents marring and chipping. Dropping pots or pans in your CorStone sink won't damage it and it is quite forgiving on your dishes as well. NAHB and CSA Certified quality. Limited Lifetime warranty.