1.Aluminum step Rescue ladder, escape rope 2."V" centre support-free hook width 3.Easy for ... 4.Compact storage size Escape Ladder, Fire Ladder, Emergency Rope Ladder, safety rope ladder fire escapeModel No.: YD5-1CMost hot sizes: 4m ... in an emergency.Smart size, very convenient for storage. Emergency rope ladder, Rescue Ladder, Fire Escape ladder, EN131