Product Description: PURPLE (Anti-Bacterial) Pre-filter + AntiBacterial HEPA filter + Activated carbon filter Equipped with a specially designed antibacterial layer for effective bacteria elimination. GREY (High Efficiency) Pre-filter + H13 HEPA filter + Activated carbon filter Utilizes a True HEPA Filter with a filtration efficiency of 99.97% (H13) for particles as small as 0.3 microns. Features a specially designed Activated carbon layer for effective removal of formaldehyde and unpleasant odors. BLUE (only compatible with Proh Pre-filter + H13 HEPA filter + Activated carbon filter Utilizes a True HEPA Filter with a filtration efficiency of 99.97% (H13) for particles as small as 0.3 microns. Features a specially designed Activated carbon layer for effective removal of formaldehyde and unpleasant odors. ____________________________________________________________________ Primary filter: Extend HEPA filter's life HEPA: Can effectively absorb methanal and PM2.5 particles in the air. Activated carbon: Can absorb methanal, remove formaldehyde, peculiar smell, etc It is recommended to replace the filter every 6 - 12 months. Suitable for: Xiaomi Air Purifier 1 / Pro / 2 / 2C / 2H / 2S / 3 / 3H / 3C PROH 4PRO 4lite F1 Etc #xiaomi #mijia #miairfilter #airpurifierfilter #xiaomifilter #mijiafilter #purplefilter #greenfilter #bluefilter
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