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another fan

There is another whole house fan on the market that has 6 blades, is silver in color and looks very much like the big box store fan. That’s because it is basically a big box fan with 6 blades. The bearings are tiny, the metal very thin and the whole thing is bolted, not welded, so there is a danger of it shaking itself apart. for the extra two blades (which does nothing to increase the efficiency or airflow and an upgraded shutter, you are asked to pay 2 or 3 times more than the same fan at the big box store. Conclusion: FAIL!   PS: it’s called something like “Zipper"

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