Aurora Double Telescopic Mag Hinge and Dual Ultra Stabilizer Portable Aluminium Ladder, 5m /16.5ft Storage height : 3.0 ft (Ultra portable) | a frame height : 8.2 ft+ human height wall support height : 16.4 ft + human height | max loading capacity : 150kgs | material : aerospace grade aluminum can be used 12 unique configurations , ideal for professionals & domestic use , material : aerospace grade al+mag alloy