Inward-Turning One Piece Door
Note: these unusual doors do not protrude
beyond the frame when opening
Inward turning type garage doors are extremely rare but planning authorities occasionally insist this mechanism is fitted in cases where a garage door opens directly onto a busy thoroughfare because unlike conventional up & over doors, inward turning type garage doors don't swing out beyond the frame when opening.
Inward turning doors normally have a top mounted spring with wire cables supporting the door at the sides, some examples have both horizontal and vertical tracks, some have counterbalance weights instead of springs.
These doors require extensive modification to make them suitable for automation, the options are detailed below: