Lightweight, no-rust aluminum construction expands to double drying space Offers up to 16-feet of usable drying space and holds items on hangers Patented locking function holds up to 40 lbs. (18.1 kg) of weight Offset rod placement allows clearance for drying when in open position Optional wall-mount assembly - hardware included. Over-the-door hooks fit standard household doors up to 1.8-inches (4.5 cm) thick This expandable Over-the-Door Mountain Lock dryer is the perfect solution for air drying garments in tight spaces. Featuring a patented locking function and sturdy, no-rust aluminum construction, it can hold up to 40 pounds (18.1 kg) making it ideal for drying anything from delicate garments to wet towels. It folds open to offer 16-feet of drying space and is equipped with two over-the-door hooks, and screws for optional wall-mount assembly. When done, it folds away for quiet storage in the closet or behind the door.