Multi-purpose professional ladder in anodised aluminium with 3/4 external/internal steps. External welded non-slip steps, internally rimmed. Automatic hinge with 2 possibilities of use: free to open and close the ladder or locked in the maximum opening position. Capacity 150 kg. Compliant with the provisions of italian legislation Dlgs 81/08 Sizes: mm. 520Lx1080Dx1200H. H. total book mm. 1700 H. working book mm. 2850 H. extended mm. 3440 H.working extended mm. 4350.