How can you get a 40 ft garage style door to work properly. Can you imagine
one track holding each end. Wouldn't the midlle colapse when in the up
position?

J.P.
"Musky" wrote in message
...
Rollers, folders.... all asking for trouble. Why not a garage-door
style door, single piece and folding upward with help from low-tech
springs? That's what we recommend for county hangars. Very low
maintenance, can be automated, and don't flop around in the wind.

My opinion only, of course.