2.3m,2.6m,2.9m,3.2m aluminuim portable folding telescopic ladder stairs 1.many styles 2.high load 3. ... 2.3m,2.6m,2.9m,3.2m aluminuim portable folding telescopic ladder stairs 1. press the two buttons on the ... top of the ladders and retrace the whold ladder at once !!2 ... . 2.3m,2.6m,2.9m,3.2m aluminuim portable folding telescopic ladder stairs