Aluminium rung multi-purpose ladder with sturdy rectangular tube stiles. It features ribbed square rungs measuring 30 x 30 mm on both sides and a 4-fold flanged rung/stile connection. This ladder can be used as a stepladder, single ladder, and extension ladder, making it suitable for climbing stairs with ladder lengths up to 3.0 m. It allows for simple height adjustment from rung to rung thanks to a plug-in hook with an automatic locking anti-lift device. The top ladder includes wall rollers, nivello ladder shoes, and a nivello crossbar (supplied loose). It also has spreading protection with two high-strength polyester belts and a detachable metal brace. The rung spacing is 280 mm, the ladder width is 490 mm (without crossbar), and it has a maximum load capacity of 150 kg.