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    dannymason2007's Avatar
    dannymason2007 Posts: 2, Reputation: 1
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    #1

    Oct 26, 2009, 11:07 AM
    What does SFM and IPM mean
    Don't remember what it means
    pjd189's Avatar
    pjd189 Posts: 15, Reputation: 1
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    #2

    Oct 26, 2009, 06:37 PM

    IPM= Internal Pressure Measurement to determine how many vents/returns needed per SFM= Square Footage Measurement (i.e. house, building, etc,)
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