PROFLO PF20178WH 20-1/2" Self Rimming Oval Bathroom Sink Constructed of vitreous china Drop In installation Sink comes pre-drilled with 3 faucet holes for faucets with 8" faucet centers; Please see (pf20174 for 4" faucet centers) Rear drain location increases available space under the sink Equipped with an overflow to prevent water overflow and spillage