Let me try to restate my question, and make my request less ambiguous…

What I am really wanting to know is the box cross section dimensions…is it 1-1/2” X 1-1/2” ??? or 2” X 2”??? square…and what is the wall thickness…If I have that, I can call up the machine shop and ask…( lets say for example it is 2” square with a wall thickness of .125”)… what will two pieces of galvanized square stock 2” X 2” with a wall thickness of .125”, 8’-6” long cost me…? I need to know what the box dimensions are? And what the wall thickness is?

Thanks,
Bob