Yep, my point exactly.  Not everyones operation is the same and not everyones equipment is under 20ft folded up.  So in a couple years from now I hope you never say  "Oh Crap! I can't get this piece of equipment in my very nice warm shop on a cold day and have to work outside because the door was to small", while the shop is empty.  Thats why I have a 40ft and a 18ft door in mine.