Low Headroom Garage Door Opener Installation. Easily converts your new track to accommodate your low headroom application. Slide each low headroom bracket down the top section until top section is tight against steel jamb.
If a top strut has been installed on the section the top roller bracket will go between the strut and the section with the roller above the strut. 51 mm to standard lift movements. Garage doors installed with double track low headroom hardware with liftmaster 8500 garage door openers.
Reduces headroom for ez set torsion spring system to 9 1 2 in.
121 mm to 12 in. This will allow a door to operate with a headroom clearance between 9 and 12 inches. Detailed installation instructions and all necessary hardware included. This will be enough space if you want to add an electric garage door opener where only 2 inches 51 mm is required to install one.