Ceiling mount bracket barn door track kit mainly suitable for the openning that don't have enough space to install wall mount track. The kit only suitable for door thickness:1 3/8"~1 3/4"(35mm-45mm) Pls make sure your ceiling is strong enough to hang door panel Our track had been pre-drilled holes for ceiling bracket Step to install ceiling barn door kit: Step 1: Prepare door panel and hardware: Door panel's height is ceiling height-14mm,pls use thickness 40mm door panel. Drill two holes on the door panel and cut a groove on the bottom of the door.(See our posted drawing photo) Step 2: Fix rollers on the door panel. Step 3: Put two stops on the track and found a best place before install ceiling bracket. Step 4: Fix track on the ceiling: Release the screws on the ceiling bracket and fix half part(round) on the track,the other part(L) tight on the ceiling. A:release the little screws on the round part,put the cyliner piece inside of the track then tight the screws,pls see attached photo. B：stand the door up and found a best place on the ceiling to install L part bracket(you can decide the gap between door and wall). C:tight the L part on the ceiling,then put two bracket parts together. Step 5: Install floor guide.