The pre-filter is a high-density mesh that captures large pollutants (crumbs, pet dander, hair, etc.). The carbon filter, containing 330 grams of activated carbon, removes harmful substances such as formaldehyde, as well as unpleasant odors. Xiaomi Hepa Filter Mi Air Purifier M8R-FLH Black Xiaomi's unique HEPA filter (H13) removes over 99.97% of fine pollutants as small as 0.3μm. It captures viruses, bacteria, fungal spores, pollen, and mechanical pollutants such as PM2.5 and PM10 (the main components of smog). Model M8R-FLH Filters Used: Pre-filter HEPA H13 filter Carbon filter Design: 360 degrees, cylindrical Compatibility: Xiaomi Air Purifier 2 Xiaomi Air Purifier 2S Xiaomi Air Purifier 2H Xiaomi Air Purifier 3C Xiaomi Air Purifier 3H Xiaomi Air Purifier Pro Lifespan: Up to 6 months Weight: 250 grams Dimensions (W x H): 200mm x 293mm Cleaning Efficiency: 100% - Large particles 99.97% - Particles up to 2.5 μm, bacteria, heavy metals, organic matter