Light Duty Duct Support - Light Duty Duct Support

Part No. A H Material Max. Allowable Uniform Load - Lbs (kN)
UP-BK 6" to 12" (152.4 to 304.8) 17" (431.8) Polycarbonate 25
UP-BK 6" to 18" (152.4 to 457.2) 24" (609.6) Polycarbonate

    General Fabricate Duct Support

    The Unipier products offer a great deal of flexibility. If you do not find an "off-the-shelf" support for your particular application, contact Power-Strut with your requirements. We can design and build the proper support for your unique application.

    For a quotation on custom fabrication, contact Power-Strut with the parameters for your design as shown below.

    1. Dimension of duct
    2. Clearance height above roof
    3. Total footage of duct
    4. Thickness of insulation, if any


    • 8" x 8" polycarbonate base with a 3/8"-16 coupler. Saddle will accommodate 1-5/8" wide (standard) strut.
    • It is recommended to use a support pad or other sacrificial material between the base and the finished roof surface.
    • Suggested rooftop loading is not to exceed 2.0 psi from the base to the roof membrane or 100 lbs. (Effective surface area in contact with deck is 50 square inches).
    • Ultimate load to the base not to exceed 200 lbs.



    • The maximum uniform load on PS 200 EH is 400 lbs.
    • Uniform load is limited by roof base allowed load of 200 lbs. (5 psi on roof).

    Single Pier Installation

    • Align center hole of Power-Strut PS 500 EH on base and attach using supplied hardware. Torque screw to 19 ft./lbs.
    • Place pipe/tubing on PS 500 EH and attach pipe/tubing clamp.