Hoo boy thing are getting interesting here in our company. Getting different opinions from different people. Can get confusing sometimes. One more thing to get confused over: our planned facility is supposed to be 16m high inside. That would mean either 2 vertical panels (11.9m + 4.1m) or horizontal panels. Which is better? Plus we're debating whether to have steel construction inside our outside. If we go with inside steel construction, how do we put a roof above the ceiling panels? Do we even need a roof? Hmmm...wondering if you guys can help out?