some architect thought this was cute, but its not. it only works if you never carry anything. also, you should be able to walk upright going up any stairs, right?
try carying a 90 lb comp down this thing. can't use a rope to let it down, the stairs block the whole opening beneath hatch. can't set it on rungs,either. put on shoulder to bring down and hung it on opening. let it drop because didn't want to get hurt beacuse of this idiot contraption.