A: Hydraulic door frames have bolted connections - that makes it quick and easy to assemble. The bolts are supplied with each Hydraulic Door!
A: Schweiss's one piece hydraulic power unit can be easily placed in any corner or room in a hangar building, so when inside the hangar building, you will only see the up/down station and not the hydraulic pump. Your one piece hangar door can be nicely finished off, to add a touch of class to your hangar home.
A: So the operator can visually see whats parked in the doorway, or what may be passing by the one piece door that swings outward when opening.