Extension springs, low headroom and what that means
Extension springs stretch along the sides of the track and carry the door's weight. They are simple and cheap, but they are also the type most likely to snap with a violent recoil, which is why we would rather see them checked than ignored. Safety cables threaded through the springs help, and we look for them.
Low headroom limits which tracks and openers will fit. A low-headroom track kit or a wall-mounted jackshaft opener often solves the problem, and a new door can be ordered to suit the space. A technician can measure and tell you what is workable.

