Canopy: Canopy door gear has traditionally been the most popular type of gear system used on up and over garage doors. They are reasonably priced and quick and easy to fit. The weight of the door is usually counterbalanced with a torsion spring that runs across the top of the garage door frame. This is anchored to the door with cables running down each side of the door.
Canopy doors do not need any tracks going back into the garage and they offer pretty much the full available drive through width as the mechanism does not take up any additional space in the opening. Canopy door gear is usually only available on doors up to 8ft wide as this type of mechanism does not work as effectively with heavier doors. Although some manufacturers including Henderson garage doors, did at one stage introduce some larger models with reinforced canopy gear.

