Unfortunately, I can't answer your question. Owens Corning does not manufacture or market attic fans so I have never done a commercial for the product. My recommendation is to write to the manufacturer (if you already bought an attic fan), or review the information on the packaging in a store (if you have not).
The product will probably have instructions inside the package as well. You can also Google the question and see what comes up. When I did that, the search engine came up with 408,000 results.
More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.