This MODULAR HVAC Jack Set is a must when larger units need to be lifted. Roofmaster has re-engineered this popular item to make shipping a unit easier. Includes all bolts, washers and lock-washers for final assembly. The higher 13" lift also allows easier access for roofing. Maximum Lift Capacity: 2000 lbs. Maximum Lift Travel: 13". Maximum extension: 11 feet (using extensions provided with unit).