Strut: Carbon Steel, Stainless Steel, Plain, Pre-Galv, Green Painted, Solid, Half-Slot, Back-to-Back, Full-Slot, Punched. Includes a Full Line of: Framing, Hardware, Clamps, Fittings, Brackets, Bases, Threaded Rod, and Roof Top Blocks. MADE IN AMERICA (IA, NE, W MO, KS)