The LiftMaster 8500W optimizes garage ceiling space overhead with is siding installation. If you want an extra storage space up above, have an oversized garage door, or even a cathedral ceiling, the 8500W LiftMaster model, a residential Jackshaft-type opener, is the perfectly engineered solution to fit your specific garage door opener requirements. It mounts easily on the wall (right or left side) beside the garage door, and comes with a remote 200-watt light that can be positioned anywhere in the garage. The powerful 24v DC motor allows for ultra-quiet operation, as well as a smooth start and finish of the door, with adjustable speed. Meets all UL325 requirements.