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Thread: CFM Chart

  1. #1
    Join Date
    Mar 2003
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    Question CFM Chart

    As a helper and novice -
    Is there a basic CFM chart for the various flex duct sizes somewhere on the web. I have received different numbers.
    from different techs. 5 inches to 14 inches

  2. #2
    Join Date
    Dec 2005
    Posts
    783
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    http://www.hartandcooley.com/flex/all_flex.htm


    Look under performance data on left side

  3. #3
    Join Date
    May 2002
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    Colorado
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  4. #4
    Join Date
    Feb 2005
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    249
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    Basic Manual D ,from http://www.acca.org ,is that it depends on the total equivalent feet of duct in each system, to know what each size duct will move in cfms.

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