KOHLER K-2210-N-0 Caxton Bathroom Sink, White Install beneath countertops to combine the look of an integral basin with the benefits of durable vitreous china and a palette of Kohler color options Exterior dimensions: 19-1/4-inchL by 16-1/8-inchW Interior dimensions: 17-inchL by 14-inchW Vitreous china. Sealed overflow drain. Undercounter installation