Barton Marine SkyDock Storage System 3 to 1 Reduction Up to 175 LBS 4-Point LiftThe Barton Marine SkyDock Storage System is a ceiling mounted solution that lifts bulky gear overhead, freeing floor space in garages, sheds, barns, and lofts. With a 3: 1 purchase system and a lift capacity up to 175 lbs (80 kg), it fits ceilings up to 13' (4 m) for spaces of varying heights. 3: 1 mechanical advantage: The three to one purchase reduces lifting effort for heavy or awkward loads. Maximum lift capacity: Up to 175 lbs (80 kg). Maximum