... .250 inch thick steel2 Diagonal Support Beams are square HSS steel tubing, 4 inches by 4 inches, .125 inches thick ... Carport, we need 6 Roof Support Beams.Rectangular HSS steel tubing 10 feet long, 6 inches by 4 inches ... , .125 inches thick.25 inch thick Steel Foot plates (Cleats) welded to each end, with L ... 2 inches wide by 10 feet long in corrugated steel 26 Gauge 1 and ΒΌ inch R-Panel.These ...