Features: 1Effective Particle Removal: This filter cartridge effectively removes large particles and airborne particles common pollutants including dust particles bacteria dust pollen smoke odors pet dander etc. 2Odor Removal: This filter efficiently and finely filters airborne microparticles reducing unwanted odors in the living space. 3Easy To Install: This filter is very easy to install and does not require particularly complicated operations providing comfort for you and your family replacing it in minutes without special tools. 4Easy Cleaning: This filter is very easy to clean after you remove the filter from the machine use a soft brush to brush off the dust. 5Applicable Model: This filter is suitable for Xiaomi new fan system A1 (MJXFJ 150 A1) and the composite wall mounted filter containing a chip can identify the matching cartridge. Specification: Item Type: Air Purifier FilterMaterial: High Efficiency Particulate AirWeight: Approx. 517g/18.2oz Package List: 1 xAir Purifier Filter Note: Please take the new filter out of the plastic bag before putting it in the machine.