Features Good Filtering: filter elements can effectively filter particles down to microns, such as dust, pollen, pet hair, etc. MORE ODORS: In addition, cotton and activated carbon materials with porous structure allow strong absorption to eliminate odours. MORE FUN Excellent filtering effects can create you a cleaner living environment, so you can fully enjoy your refreshing home. WORKS RELIABLE - Provides better noise reduction and longer service life, air purifier filter also ensures stable airflow. Perfect Match: Perfect fit for blueairs classic 402, for blueairs classic 403, for blueairs classic 410, for blueairs classic 450e, for blueairs classic 455eb, for blueairs classic 405. Specification: Item Type: Air Purifier Filter Material: High efficiency particulate air filter, cotton, activated carbon. Package list: 1 x Air Purifier Filter Note: To make your air purifier work at its best, we recommend changing the filter every 6 months or so. Package List 1 x Air Purifier Filter