The Xiaomi Smart Air Purifier 4 Compact Filter offers you a high-quality three-layer high-efficiency filtration system to protect your health. The all-in-one powerful filter gives you layers of purification for a much cleaner air output. This filtration system consists of a primary filter, Xiaomi’s high-efficiency filter and a high-quality activated carbon filter that work together to purify your air and keep you healthy. Designed purely for the Xiaomi Smart Air Purifier 4 Compact, this replacement filter helps bring new life into your Xiaomi Air Purifier. The primary filter allows for 360° blocking of large particles. The primary filter provides an initial filtration by filtering dust, hair, and fine crumbs among other large particles and is resistant to creases, oil, acids, alkalis and more to ensure long service life. Xiaomi’s high-efficiency filter gives you up to 99.97% filtration of 0.3μm particles. The high-efficiency filter removes PM2.5, pollen etc. for consistent clean-air output. The high-quality impregnated activated carbon filter provides powerful odour adsorption. The high-quality activated carbon filter, with the sophisticated pore structure and evenly distributed carbon, effectively removes air pollutants and odours that are harmful in your home. By combining two filter technologies: Electrostatic charge and mechanical filtration, Xiaomi’s high-efficiency filter media can remove 99.97% of airborne particles of 0.3 micrometres in size and traps dust, PM 2.5, pollen, pet dander, smoke and tiny particles. Compared to a conventional HEPA filter, Xiaomi’s high-efficiency Filter allows the air purifier to generate less noise and consume less energy by allowing more air flow to pass through the filter all the while keeping the same cleaning efficiency. FEATURES: Three-in-one Powerful Filter Primary, High-Efficiency and High-quality Activated Carbon Filter PM2.5 and Pollen Filtration Pet Hair Filtration Odour Elimination Designed for Xiaomi Smart Air Purifier 4 Compact Only SPECIFICATIONS: Compatibility: Xiaomi Smart Air Purifier 4 Compact CADR Particle: 230 m³/h Product Dimensions: 20 x 20 x 31 cm WHAT’S IN THE BOX: Xiaomi Smart Air Purifier 4 Compact Filter – Grey x1 Instruction Book x1