"Blueskies" wrote in message om...
Not these doors, which is what I have. They have the aux arms on the sides which allow them to open further with a given
opening...

http://www.hi-fold.com/

They don't gain as much headroom as you think. By their own spec's,
the vertical height of the door opening will need to be nearly 30"
over the height that I would need. Besides, here in the summer time
heat and wind, a bifold is a PITA. It's too hard to regulate airflow
through the hangar.

Craig C.