Sun System Universal Reflector Uni-Strut Brackets safely hang your Sun System reflector in a greenhouse or commercial application. Heavy-duty, bolt on mounting brackets used to attach your Sun System reflector to uni-strut/kindorf framing. Used for rigid mount applications for additional safety and support. May be adaptable to other strut/framing applications. These brackets are constructed of sturdy 10 gauge galvanized steel and powder coated to protect from wear and rust.