Yup, that's exactly what my wife and I did when we swapped out the 4' for the 6'. I will admit to being nervous because I'd never done it before but how else do you get em inside these old houses? No issues and I've had it setup for a little while now.You should be able to stand a 6’ tank on end to get it thru the door. My 150 gal tank is 6’ x 18” x 29”and fit thru a 90 degree turn into a door standing on end. I could be wrong but I would think you could do it.
