Each Enbol ceramic sink for bathroom is carefully crafted to enhance the quality of life and provide you with a comfortable cleaning time. Durable: Ceramic rectangular undermount bathroom sink is made of ceramic, low water absorption, acid resistance, high temperature resistance, resistant scratches. Easy to clean: White bathroom sink undermount, easily sweeps countertop stains into the sink. Smooth, non-porous surface easily wipes away stains. Rounded corners design with no dead spots for cleaning. Overflow hole: Bathroom undermount sink has an overflow hole design, water will not overflow to the countertop, keep the bathroom clean and tidy. 18 Inch Rectangular Ceramic Sink Size Outer Dimensions : 20 5/8" L x 14 6/8" W x 8 1/8" H Inner Dimensions : 18 3/8" L x 12 4/8" W x 6 1/8" H Min. Cabinet Size : 24 inch Drain Opening : 1.75 inch G. W. : 26.01 pounds N. W. : 21.76 pounds Regarding the size of bathroom sink？ The external dimensions of this sink are: 20 5/8" L x 14 6/8" W x 8 1/8" H. The internal dimensions are: 18 3/8" L x 12 4/8" W x 6 1/8" H. Due to errors in ceramic sink and manual measurement, please measure the box first when receiving it. Where can this sink be installed? The sink designed for bathroom, vanity, lavatory, restroom, master and the second bath. Suitable for new decoration or replacement of bathroom sinks. How to install and package the sink? Enbol undermount bathroom sink packing has been thoroughly tested to protect your products from damage in transit so that they arrive in perfect condition, ensuring that your renovation or construction project gets off to a smooth start.