The LSZ Loft Ladder structure is the same as the LST model except for the box structure which consists of a metal framework integrated with wooden box and quickinstallation bracket. Similarly to the LST loft ladder, the hatch unloading mechanism holds the unit in any position when fully opened. This guarantees safe folding and unfolding the ladder. The unique special unloading mechanism eliminates the need for a lock. The overall floor-ceiling ladder height can be increased to a maximum 330cm by adding two LSS segments.