The Fellowes AeraMax DX95 Air Purifier Replacement Carbon Filter removes odours and captures large airborne particulates. The Sanitised layer effectively reduces the development of bacteria, fungi and dust mites on carbon filter. Filter is compatible with the Fellowes AeraMax DX95 Air Purifier. Replace the Carbon Filter approximately every 3 months in order to ensure that the Air Purifier remains effective. Pack of 4.