COMPATIBLE REPLACEMENT FILTER FOR AMERICAN MICRONIC air purifiers, This is not a AMERICAN MICRONIC OEM product and is not covered under any Philips manufacturer’s warranty. The AMERICAN MICRONIC brand names and logos are the registered trademarks of their respective owners. This is a high-quality replacement part. This filter is absolutely essential for allergy sufferers designed to filter PM 2.5 smoke, dust, pet dander, pollen, mold pores, fabric and other allergen airborne elements. Compatible with AMI-AP1-22Dx air purifier