Simply input the rise of your landing into the FORTRESS Calculator and it will tell you which FORTRESS® OSHA Stair System model you need for your application and what position you should set the stair system at.
Both models can be set at two different positions, one with the top step level with the platform and one with the top step one riser height below the platform. At these two set positions, a height range is attainable due to the independently adjustable platform and riser legs. This design not only allows for easy, on-site leveling, but also allows the stair system to be set at a different height when moved to a new location.
CAUTION: Note that not all positions of the FORTRESS are OSHA Compliant.
FOR2334 is OSHA compliant at 25.5” and 34” || FOR2742 is OSHA compliant at 34” and 42.5”