The mounting process is not great--the upper lid keeps falling as I cannot move themount far enough forward to allow the upper lid to stay put. I had a $40.00 bidet prior, it did a better job cleaning me than this unit--It works, the control handle is superior, but, overall, I'm not thrilled--I had discarded the box the unit came in, otherwise I would have returned it. I  have given the unit 1 star.