The poly panels are actually made for green house roofs. The ones I got were on Amazon and are rigid, 5/16” and are 24”x48”. There are tubes that run the length on the poly panel. I plan to countersink the bolts into the poly panel and epoxy them in. Then there will be 6 of these on every panel and the poly panels will affixed to the camper with VHB tape the same that parts of the camper are being constructed with. I plan to use roofing tape to secure the leading edge of the solar panels that are facing forward to the front of the truck to stop any wind from making them flap. I will also leave air gaps in tape securing the poly panels to let heat and water out. Hope this helps. I’ve tried posting pics but it won’t let me, I’ll try again later.