In all cases, it is best to equip the door with an electric garage door operator. There are basically two categories of such operators: trolley (central) and jackshaft (wall-mounted). When at all possible, install a three-phase motor with the highest voltage available. If you choose to manually open and close your garage door, ask for a chain hoist when the height of the door exceeds 12 ft. (3660 mm). Get in touch with a GARAGA-certified installer to find out more about safety accessories.