We found out the hard way that our drain pipes coming out from the wall (18" off the ground which is industry standard) line up perfectly with the back side's lower support board of this vanity which meant we had to cut up the back of the vanity to hook up the faucets.    Seems stupid to build a vanity without considering drain pipes need to fit through it at that standard 18" off the ground.    Doesn't the vanity building business know better?  Also, after fully un-boxing the vanity to install, we noticed a crack in the back of the vanity below the sink.  We were able to reinforce the crack so it didn't fully break under the weight of the top.  Vanity, otherwise, is lovely and looks awesome in our newly remodeled bathroom.