Up & Over Garage Doors
A retractable garage door has wheels at the top of the door which run in horizontal tracks which are fitted to the door frame at the top front and the rear supported by hangers from the ceiling or wall.their is an arm attached to the vertical frame posts and the bottom of the garage door and a spring assembly assists the door to open.when fully open , most of the door is inside the garage. They provide an exceptionally smooth opening and closing action which is also ideal for electric operation.
A canopy garage door mounts entirely to the door frame therefore ideal if their is limited space inside the garage, or no ceiling. When open ,usually , two thirds of the door is in the garage , with one third of the garage door protruding outside the garage.