Material of rope: high-strength polypropylene (nylon) Material of rung: epoxy resin Diameter of rope: 18mm-20mm Diameter of rung: 23mm Length of rung: 33cm Span: 36-37cm Length of ladder: 5m, 10m, 15m, 20m, etc Static load ¡¨¹ 450kg 20m rope ladder weights about 15kg. 15m rope ladder weights about 11kg. 10m rope ladder weights about 8kg.