Kingston Brass | Kingston Courtyard White China Vessel Bathroom Sink with Overflow Hole. This uniquely-designed vessel sink features a skewed square-shaped basin which descends inward to the drain hole at the center base. The depth of the basin is 5-5/16" with 16-1/2" length and a 15-1/4" width. Made from fine vitreous china. 16-1/2" x 16-1/2" x 7-7/8" exterior. 15-1/4" x 15-1/4" x 5-5/16" interior. 1-3/4" drain hole. Drain not included. Tabletop mount.