I am really debating on if I otta make an in closed box for mine or not, I am not going to use it in the winter cuz I pre heat my water with my coal stove. So this is just a summer thing. I have some 1 x 6 x 10 foot ruff cut lumber. I was going to use that for the box or just lay a bunch of pipe on my roof for the summer. Not sure yet, the box sounds better.
Jim