I have my panels, 40x80". Going to mount them long way across Teton roof. They will need to be about 7" tall. Need to go take a measurement for exact height. Going to use angle iron and flat bar. Bolt angle iron to bottom of panel and to roof. Flat bar between for height. Think this be good.? You that have mounted a lot of these know more than me. Considering welding up supports. All I have is a stick machine by choice. Get some stick aluminum rods. They weld nasty but hold good. Center support will be a continuous bar down center for a screw or bolt thru top with washer. What that will be is what I can buy local. I can start building supports while knee improves