Durable, smooth, non-porous and polished surface is resistant to bacterial growth and low water absorption for more easily to clean and maintain. CUPC : This modern bathroom sink meets U.S. and Canada high-quality standard (Uniform Plumbing Code), certified by IAMPO. Above-counter design allows you easy to install your vessel sink without replacing the entire vanity, US standard 1.75” drain opening. Sink can perfectly match with wall-mount and vessel faucets for your more optional of decoration style. Exterior dimensions:16 "x12"x4.5", it is regular size fits most countertops and this compact washing basin it is ideal for smaller bathroom, powder rooms or bars. Warranty: 3 months hassle free for return and money back, pls buy with confidence. If any question or problem, pls contact us and we will service you within 24 hours.