The patented CS-Vari-Angle Series support has variable angle support designed for ventilation duct, walkway systems, HVAC equipment and many other applications. It can be installed on sloped or uneven surfaces. Adapter leg will accommodate 1-5/8” x 1-5/8” steel strut for framing. The C-Port is UV resistant and suitable for installation on any type of roofing material, including sloped surfaces. 10 inches Length