HARRY47264

32'x18' with 2 layers of greenhouse film with a 6' fan from an old range hood that blows the warm interior air keeping the two film layers separated it gives you a small insulating factor

32'x18' with 2 layers of greenhouse film with a 6' fan from an old range hood  that blows the warm interior air  keeping the two film layers separated it gives you a small insulating factor
HARRY47264, Dec 4, 2016

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