KOHLER K-5400-W-0 Iron Plains Undermount Rectangular Bathroom Sink, 18.56" L x 15.75" W x 6.3" H, White Included components: Rectangular shaped vessel sink No faucet holes (requires wall- or counter-mount faucet) With back Overflow Basin internal dimensions: 17.5'' L x 14.75'' W, Sink depth: 4.56 inches Undermount installation