Specification : Trestle Ladder LFD250GFA Frame : Fiberglass rails Steps : Aluminum-alloy Spacing Between Step : 300mm Close up Length : 2410mm Extended Length : 2250mm Number of Steps : 7 Weight : 17kgs Maximum Load : 150kgs Pack Size : 245X67X23.5cm 20'Container : 90pcs 40'Container : 180pcs