xiaomi smart air purifier 4 pro filter

Key SpecificationsFiltration Efficiency: 99.97% of particles down to 0.3μm (traps dust, PM2.5, pet dander, pollen, smoke, and pet hair).Filter Structure:Primary Filter: Catches large particles (dust, human/pet hair) and resists creases, oil, and acids.Xiaomi’s High-Efficiency Filter: Uses melt-blown PP fibers with an electrostatic charge, allowing more airflow and less noise while maintaining efficiency.Activated Carbon Filter: High-quality, evenly distributed porous activated carbon.Activated Carbon Weight: 650,000 mg (effectively eliminates VOCs, cooking fumes, and household odors).Filter Media Area: 24,000 cm².Dimensions: Diameter 22.6 cm × Height 36 cm.Lifespan: 6 to 12 months (depending on usage).Smart Features: Includes an RFID tag for automatic filter recognition and lifespan tracking via the Xiaomi Home app