Bathroom Unique Red & Purple Glass Vessel Sink & Chrome Waterfall Faucet Combo 17.5" Diameter and 5.5" Deep 19mm thick The highest point of the glass tray is 5.5" off the counter top The lowest point is 2.25" off the counter top.6 1/2" diameter tempered glass dish water outlet 12mm thick tempered high grade glass from the rim to the center Laser guided check for the accuracy of the vessel drain hole drilling to prevent leaking problem.