Dr_Stupid

For those wonder "How you use this"You need to have a cold inlet from the: Shed, House, Structure, that you're using to heat. Then from the top, you have a warm air out leading to the Shed, House, Structure, you're going to heat.This woks by convenction. You can mount it free standing with ductwork, or you can mount it to the side of a building. Yes, it is outside in the weather, however, the sun puts out a LOT of heat, and this is one way to capture that

What part of "ILLEGAL" do you not understand? I suppose you're the kind of person that prefers the term "Undocumented".