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Old 2015-08-23, 6:39pm
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Gila Gila is offline
balanced but asymmetrical
 
Join Date: Mar 17, 2006
Location: Oregon
Posts: 519
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Jim, this part of your research is especially interesting to me:

"6 and 8 are very close as far as CFM, mainly limited by the size of the fan, but for a funnel I want increased velocity going into the opening, as well as adequate volume, so I went with 6 inch."

Thanks for sharing .
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