SPECIFICATIONS: Base Only Bases with 12 ga. Galv. Channel (1-5/8" high) and Adapter Leg Dimensions - 5 5/8" High (not including height of adapter leg) x 6" Wide x Length (Base Length) Material - 100% recycled rubber, UV resistant Adapter Fitting- 1 7/8" x 1 7/8" Square Tube with 9/16" holes on all four (4) sides. High. Maximum Load- 500 lbs. C-Port CS- Vari-Angle: Support is variable angle support designed for Ventilation Duct, walkway systems, HVAC equipment and many other applications 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 most types of roofing material, and sloped surfaces. Download spec sheet