Main Feature 360 degree triple-layer filter, High performance 380m3/h CADR. The 360 degree cylindrical filter is designed for maximum intake. The triple-layer filter used a primary filter, H13-grade True HEPA filter and activated carbon filter to remove dust, odours and other respirable particles. RFID tagging A unique tag on every fitler. Each filter come with its own unique ID. Made with PET (polyethylene terephthalate), the outer layer has high flexural strength and is resistant to folding, grease, fats, acids, alkalis and most solvents. The sylindrical shape provides 360 degree filtration of dust, hair and other larger folating particles. Uses an Ultraidense True HEPA filter to trap PM2.5, PM0.3, pollen and other respirable particles, allowing only clean air to pass through. Filters out formaldehyde, odor, and more. Filter replacement is a breeze change filters in 10 seconds.