Re: Looking for a 4″ solar fan for my greenhouse.

[nick@off-grid.net]

Actually, just FYI, this topic would be better in the technical forum, but now its here, I just wanted to mention ~I saw a lot of solar fans in the Emerald triangle – pot-growing country. they sell for about $70 in most solar stores and everyone knows they are used to dry out marijuana

So it depends where you live, but if you go to your local dope growers supplier you might find what you are looking for