The garage door's weight is counterbalanced by the springs. Garage doors usually have two extension springs that run in the same direction and go the same way as the rails. The torsion spring, as shown in the photo above, is a space-saving tube made of metal and a spring that extends above the garage door. The torsion spring stores energy and allows the door to be pulled up. An opener mounted on a wall (also called jackshaft), drives the torsion spring at the top of the garage door. The motor hangs from the ceiling and is mounted on the wall. This allows for more storage space or work on raised cars on shoplifts.