Aluminum rung ladder. Robust rectangular tube stiles. Ribbed square rungs measuring 30 x 30 mm on both sides. Fourfold sintered rung/stile connection. Convenient height adjustment from rung to rung thanks to two rope sets with plastic rope. Automatically acting insertion hooks, with the middle and upper sections adjustable separately. Upper ladder with wall rollers. Corrosion-resistant guiding fittings with sliding rails. Rung spacing: 280 mm. Ladder width: 470 mm (without crossbar). Maximum load: 150 kg. Standard crossbar with non-slip ladder feet at an optimal width for the selected product, ensuring safe standing and climbing on single-section ladders over 3.0 m. The crossbar is supplied loose and is screwed twice at the lower end of the stile. Note: According to the standard, the attached extension ladder leg cannot be separated from the ladder for lengths over 3.0 m.