Industrial grade tracks and pulleys can easily hold 400 lbs. Loads SINGLE TRACK BYPASS SYSTEM Upgraded One-Piece single track bypass sliding barn door hardware is low ceiling design, only need 6 inch ceiling space from top of the door to ceiling Wall-mounted is very easy to install, no tedious installation steps, saves more space than a side pull door and traditional double track bypass kit SLIDE SMOOTHLY AND SAFETY More safely unique antijumper, prevent thedoor lifted off the track, smoothly sliding operation gives you ultra-quiet experience.