Tight spot but it fit!  I had to raise the piece behind the toilet, because our plumbing was higher. You definitely have to stabilize this to the wall, or when you open the doors, the unit will tip over. I would advice placing the top piece after putting the bottom part over the toilet. Unless you have an extra extra high ceiling, you won’t be able to lift the entire unit over the toilet. Besides, it’s easier to put the bottom piece on first. An attractive piece and not the usual old fashion one you see everywhere.