This curved open farmhouse sink is hand hammered from 100% recycled copper by master artisans. Through years of skill and experience passed down from previous generations, the end result is a one-of-a-kind work of art. Made from 16 gauge copper, this luxurious single large sink has a curved front apron and a warm antique finish. A spacious 29" x 18" interior makes washing dishes a breeze. It has a standard 3.5-inch drain opening for U.S. plumbing connections. Due to the handcrafted nature of this product, it will vary in appearance, finish, texture, hammering and other details. Dimensions may vary up to 1/2". We strongly suggest you receive the actual piece before making any installation cuts.Copper is amazingly easy to maintain. Fingerprints do not show as they will on stainless steel and other metals. For basic cleaning simply use a mild soap and water. Other cleaners are not necessary. Copper has a "living finish" and its patina will continue to develop character over time, meaning it will become a richer, darker color. The patina creates a unique look of light and dark tones complementing each other. Made with the highest standards of quality and creative design, Novatto sinks add artful function and charm to any kitchen. Supreme packaging and boxing ensure damage-free delivery.Single large kitchen sink with curved apronHand-hammered antique finishApron-front or undermount installationArtisan handcrafted in Mexico16-gauge recycled copper constructionApproximate dimensions; Tolerance = +/- 1/2" Outside 33 by 22 by 10.5-inchesInside 29 by 18 by 10-inches3.5-inch drain openingStandard plumbing connectionLimited lifetime warranty