Height Of Counter Top Wash Basin . If you are shorter in height than the average person 5' 6 then you should knock this off the height of your finish height of your wash basin i.e if you are 3 less than the average then knock 75mm off. This should be roughly the same for all washbasin types, including those fitted within a vanity unit. Laufen Pro A 1050 x 480mm Countertop Washbasin Without Tap Hole from www.aqva.co.uk We have sponsored or participated in some of china local events to expand our brand visibility. And we post regularly on social media platform to. The bowl of the ikea rättviken bathroom sink has a depth of 3.875” (10 cm).