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Which direction should the airflow arrow point on my air filter?
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Which Way Does The Furnace Filter Go?
National Property Inspections - A common mistake on furnace filters is air flow direction. Arrow on this filter should be slanted down. Remember to Change it as needed every 1-3 months. Air
Proper Way to Replace a Home Furnace Filter - Arrow Direction - YouTube
Which direction should the airflow arrow point on my air filter?
