“Each filter has an arrow on it indicating air flow direction. Does it matter if installed with direction arrow away from air flow?”

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• Please install the filter with the arrows facing toward the inside of the unit you are installing the filter in. If our team can assist in any way, please connect with them by calling 1-800-388-3458 Mo-Fri 8am-4:30pm CT and mention file number 37457896.

  Answered by 3M Social Engagement 2 years ago

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