Available in 2 operating mechanisms, canopy and retractable. The principal difference between the two is that the retractable type has horizontal tracks which guide the door almost fully into the garage. The canopy type have vertical tracks on the back of the frame which leaves approx one third of the door protruding when the door is opened. Retractable is the best type for automation. All up n over doors require a frame which can be either timber or a finished steel frame matched to the door.
With the retractable plus type gear (available on doors up to 90 inches wide), there is no loss of drive through width at normal door mirror height. For doors over 90 inches wide there is a reduction in drive through width of c 120mm.