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    Calculate Air Exchange (CFM)

    Enter information into the fields below to calculate the required airflow per fan.

    To calculate the CFM required to adequately ventilate an area, we divide the room volume by the appropriate “Minutes per Change” value.

    [CFM] = [Room Volume] / [Min./Chg.]

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    Airflow (CFM) per Fan

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    Starred items represent required fields.