The installation was installed directly by the customer “Installation was a snap. We mounted the stairs on an area where the duct was not perpendicular to the metal roof standing seams. We simply installed some S-5 clamps to align with a section of uni-strut and then bolted the uni-strut to the base of the stairs. It took longer to get the material up on the roof than to install. Very happy with the results. Then we painted the uni-strut safety yellow to match the handrails.”