"The Kingsman Hardware Ceramic Round Topmount Bathroom Sinks Are Our Most Luxurious Sinks Ever! It compatible with Single Hole and 3 Holes faucets. Simple and versatile design, easily match with any fixtures in the bathrooms. Neat and clean topmount / Drop In installation make this sink an affordable luxuryClassic Self Rimming Round shape creates timeless design in a guest bath, master bath or powder room. Easy-to-clean polished surface with topmount / Drop In / Self Rimming installation with 20"? minimum cabinet size. Standard 1.75 inch drain opening works with pull-up & pop-up drains with overflowRound Shape Topmount Sink with OverflowCertified and Listed by cUPC with limited lifetime warranty19"? x 19"? x 8"? (Exterior)14.5"? x 12"? x 7.5"? (Interior)20"? Minimum Cabinet Size"