Mi Air Purifier Formaldehyde Filter S1,Three-Layer - Easy Installation Carbon Rfid Chip High Flow The Passes Evenly, Dedicated To Purifier 2H, 2S, 3H, Pro

【Coming clean】How well a filter performs depends on its purification ability and aerodynamic design. Supplied by the top 3 US air purifier manufacturers, the filter combines an aerodynamic 360° cylindrical design with a powerful triple-filter, 【PET primary filter】 360° filtration of large particles Made with PET (polyethylene terephthalate), the outer layer is 3 to 5 times tougher than comparable models. It has high flexural strength and is resistant to folding, grease, fats, acids, 【Ultra-dense H11-grade HEPA filter】 Filters up to 99.3% of PM0.3 HEPA (High-efficiency Particulate Arrestance) is frequently used in hospitals and labs to filter out micron-sized particles, 【Finely folded 161 times】The ultra-dense HEPA filter measures 7.7m when fully extended. Although ideal for air purification