2.3m,2.6m,2.9m,3.2m aluminuim portable folding telescopic ladder stairs 1.many styles 2.high load 3. ... pr 2.3m,2.6m,2.9m,3.2m aluminuim portable folding telescopic ladder stairs 1. press the two buttons on the ... ladders with good quanlity and diffent styles as follows : meet EN131 standard . 2.3m,2.6m,2.9m,3.2m aluminuim portable folding ...