Aluminium sliding ladder with rungs. Sturdy rectangular tubular stiles. Ribbed square rungs measuring 30 x 30 mm on both sides. Four-fold bent rung/stile connection. Easy height adjustment from rung to rung thanks to plug-in hooks with an automatic locking anti-lift device. Top ladder from size 2 x 14 rungs with wall castors. Corrosion-resistant guide rails. Middle and top ladders up to 3.0 m with nivello ladder shoes. Rung spacing: 280 mm. Ladder width: 500 mm (without crossbar). Maximum load: 150 kg. Nivello ladder shoes with patented 2-axis tilt technology. Note: Single ladders over 3.0 m may only be used without a crossbar if they are used exclusively for their intended purpose (e.g. permanently installed, fitted with hooks, etc.). Note: According to the standard, the attached extension ladder section cannot be separated from the ladder for lengths of more than 3.0 m. The ladder must not be used without a crossbar.