Just took old Pollen filter out (forgot to look at arrows on way out) I would presume airflow is top to bottom and the arrows should point down:confused: The old mans on holiday so cannot ask him and will have to wait for tomorrow to confirm with a garage.

Yes its a silly question I know!

Kind Regards

Yes arrow on side is to indicate air flow direction.

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Edited 28 June, 200916 yr by SJFISHER67
posted twice.