This ought to be a FAQ but I don't think I've ever seen it before. If I want to buy a new rollaboard bag that will fit wheels-first in the overhead on all UA mainline aircraft, what's the maximum height it can be? And by height, I mean wheels to handle distance. Current bag will fit on the 757, but on most others it has to be turned sideways. I want to stop taking up more than my fair share of space.
