Easy *************************************************************, Fresh Air: Simplify maintenance with the one-piece cartridge set designed specifically for the MD13 Smoke Purifier. The carrying handle design ensures hassle-free *************************************************************, giving your air purifier a new lease on life and keeping your workspace fresh and clean. Advanced Filtration Technology: Experience superior air quality with our 4-layer filtration system. Including a pre-filter with coarse cotton and coarse filter cartridges, extended HEPA filter, and premium activated carbon, achieving an impressive 99.97% smoke removal rate. Long-lasting Performance: With an average cartridge lifespan of up to 300 hours, our ************************************************************* kit offers prolonged functionality. Adapt to varying smoke types and volumes with ease, ************************************************************* cartridges as needed based on your actual usage experience. Maintain optimal performance and enjoy clean air effortlessly. The first layer:8mm thick coarse cotton F6 (1~10um45%), the second layer: intermediate cartridgeF8 (1~10um85%),the third layer:high-effciency coconutshell activated carbon 1=1000, the fourth layer:high-effciency cartridge H12 (0.3um99.9%) Note: The MD13's LED bar will indicate when the cartridge needs *************************************************************. You can decide based on your actual usage experience, ensuring timely ************************************************************* and optimal purification performance., Manufacturer: Genmitsu