Whatever the result is, please post about it. I have this very worry for when I get a larger 100gal tank (6 feet long) in about a year or so. It has to go downstairs with the other tanks, but to get down there, we'll have to carry it down a flight of stairs, then immediately, somehow, pivot through a doorway. Kinda like a hallway with a door at the end. I can't remember if we had trouble moving the 4f tank (darnit, why wasn't I paying attention?)