Just an FYI. Lots of woodburners buy fans to move air from one room to another. Because of a drop down header coming out of my family room I have used a Minute Man doorway fan for years. Just about the time I was going to drop fifty bucks for a new one I came across this one at Home Depot. Higher CFM and half the price. Online they are nineteen and change and are twenty-one and change in the local HD. They are in the plumbing department and I had to hunt it down because the store guy swore they didn't have anything like that. Well, yeah. Fifteen of them on the shelf.
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It's great because it has the t-stat on it to adjust the airflow, and the little slides to alternate the direction 