Finether 12.1 ft Folding Ladder Heavy Duty Multi Purpose Step Stool Extendable Ladder Aluminum Safety first: safety locking hinges, European safety standard EN131 Fully extended dimension: 370cm / 12.1ft; extension dimension: L 36 x W 27 x H 102 inches Fully folded height: 102cm / 3.3ft; folded dimension: L 14. 2 x W 10.6 x H 40.2 inches Multi purpose: can be used as single ladder, double sided ladder, trestle, work platform, stair ladder etc. Portable and space saving storage: extra thick all-rustproof aluminum alloy construction, weight only 24.7lbs / 11.2kg