Question about Fantech Fan FG8XL

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Size of vent pipe

Plan to put in remote range hood fan using Fantech FG8XL @ 512 CFM . Have to run about 28 ft of 8 inch flexible ducting. Flex duct will bend 45 degrees twice. How would the air flow be affected? Would useing 10 inch be significantly better?

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You will be fine with 2 bends in an 8 inch pipe. If you bend it more than 3 times though you will loose fan force. If you up to a 10 inch duct you will not have good fan force because the space is bigger.

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Posted on Feb 25, 2009

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