Ours has a screen also and it is like the kind of a window you put a stick in it to hold it open, but they made a aluminum stick instead conected to it, but if a gust of wind comes up and under, it pops it out of the holder and then the ladder has to come out on the outside to put it back in the holder slot.
it does have 1 good feature, in the rain it does not come in it rolls off the window.
I dont ever wish to try and get out that window in a emergency,
it being so small and the drop is farther than I or my wife realy want to drop,
but I guess if there is fire you will jump.
Ozz is your window still rated for an escape or emergency window or is it just a window. it sure looks great.