... construction structuresSome information about the products .1. Vertical Support #1: For each 6-Car Carport, there ... x 4 inches, .250 inch thick steel2 Diagonal Support Beams are square HSS steel tubing, 4 inches ... inches thick, mounted to the vertical support2. Roof Support #2: For each 6-Car Carport, we need ... (Cleats) welded to each end, with L-Shaped Cleat support welded to middle to bolt to C-Purlin6 ...