The Altrex Sierra SDO is a professional staircase for the professional handyman and craftsman. Because it can be double-rolled, you use it on both sides. This is useful for heavier jobs or professional projects. You achieve a working height of up to 2.95 meters with this 4 x 2 steps. Thanks to the open step profile, the staircase is lightweight, despite its robustness. The steps are also attached with pop rivets, so you can quickly replace them if necessary. The platform is equipped with a hinge system that prevents pinching of the fingers. The spreading position protection, sturdy pedestals and anti-skid profile complete the safety of the Sierra SDO.