Yeah well needless to say I am not hauling the thing up Mt. EVerest. I do the Weston thing with the 12x20...if it is further away than 100 yards from the car..it is not photogenic anymore.
To answer you question about the size, my Korona is 23 x 20 in the back and when open it can go up to 25 inches in lenght. Bellows draw is 30 inches since there is 4 inches recessed at the back and an extra inch at the lens board.