EN131-professional aluminium extension ladders. Complete with large 32mm serrated trilobular rungs with 4-way crimp & swage design for maximum durability and comfort when working at height.Rungs orientate flat when erected at correct climbing angle to provide a stable standing surface.All ladders that extend beyond 3m are supplied with a stabiliser for maximum safety. Complete with deep serrated rubber feet for maximum grip on all surfaces. Heavy duty galvanised steel locking pin provided as standard on all extension ladders. 150kg load capacity. Meets the standards of BS EN131-2:2010 + A2:2017.N.B. never stand above the fourth rung.