Ultra-Quiet, space saving wall mounted residential Jackshaft Garage Door Opener. This residential Jackshaft opener will provide a versatile solution to many unique installation problems. This wall mount design is perfect for doors with very low ceilings, cathedral ceilings, or obstructed ceilings, or if you want to maximize your ceiling storage space. The Jackshaft opener will accomplish many of today's needs. For sectional doors with TORSION SPRINGS ONLY up to 14' high. Can NOT be used with sectional overhead doors that have extension type springs.