This particular filter's arrows do not indicate the airflow direction, they simply indicate the orientation it should be installed. For more information on the difference between "UP" arrows and "Airflow Direction", watch the video below: kzbin.info/www/bejne/eGOviqqBbLmmh6M Purchase this filter: filterheads.com/products/cabin-air-filter-air-qualitee-aq1102c