air purifier replacement filter keep your air purifier in the best working condition and capacity. 3-Stage Filtration: fine preliminary, true hepa and activated carbon filter. It removes dust, pollen, smoke, odours and pet hair It also filters particles as small as 0.3 microns and larger and also filters air pollution of PM 2.5 Breathable Stem protect: perfect for those who are sensitive to the surrounding air quality. It will not release hazardous substances or ozone Sealed: filters are sealed to help you to protect your service life. It is recommended to replace air filters every 6 months. Remove the filter from the plastic wrap before placing it in the air purifier Delivery Quantity: 1set(2pcs) Product color: black Product size: 19*6.3CM