Nantucket Sinks GB-17×13-W glazed bottom undermount ceramic bathroom sink. A classic rectangle design in white for an exposed installation. Easy and functional with a slight taper to the interior. The undermount design makes for a seamless transition and easy to wipe excess water from your counter right into the bowl. Finished in a porcelain enamel glaze. Top rim of sink is unglazed as it will be covered by countertop. The interior basin measures 17 inches by 13 inches. This sink has an overflow and a 1.75″ standard vanity drain diameter.