Three-layer Filter Box Prefilter — Prefilter + Carbon + HEPA What it does and why you need it Removes a wide range of airborne pollutants for cleaner indoor air: larger debris and pet hair, unpleasant and harmful gases, and fine microparticles including PM5 and viruses. Provides continuous protection for homes and small commercial spaces where air quality matters — reduces allergens, odors, and airborne contaminants that aggravate allergies or respiratory conditions. Built as a multilayer filter box solution so you get staged capture and longer overall filter life. Key benefits Effective staged filtration: the three layers work together to remove different types of contaminants so each layer does less work and lasts longer. Better indoor air quality: carbon media neutralizes odors and gases; HEPA media captures fine particles and microorganisms; the prefilter stops dust and pet hair. Sustainable option: the prefilter is recyclable, helping reduce waste and lowering ongoing filter costs. How it works (three-layer system) Prefilter: captures larger particles such as dust and pet hair. Reduces load on the deeper media and is recyclable to support sustainable use. Carbon filter: adsorbs and reduces unpleasant and harmful gases and odors for a fresher indoor environment. HEPA filter: captures microparticles (including PM5 and viruses) to provide a safer breathing atmosphere. Key attributes Function: Multilayer filtration (prefilter + carbon + HEPA) for comprehensive pollutant removal. Compatibility: Designed for use as a filter box prefilter assembly and replacement in compatible filter box systems. Materials: Fibrous prefilter media, activated carbon layer, and HEPA-grade filtration media. Performance: Staged capture increases overall efficiency and extends media life by removing large particles before carbon and HEPA stages. Practical applications Homes with pets: traps pet hair and dander in the prefilter while carbon reduces pet odors and HEPA captures fine allergens. Cooking and smoke-prone kitchens or apartments: carbon layer reduces cooking odors and volatile compounds; HEPA and prefilter remove grease-laden particles and soot. Allergy, asthma, or infant rooms: HEPA and prefilter reduce airborne allergens and particulates to create a cleaner breathing environment. Installation and maintenance notes Replace or clean the recyclable prefilter according to usage and manufacturer recommendations to maintain performance. Replace carbon and HEPA stages when indicated by your device or according to the original equipment schedule to ensure continued pollutant reduction. This three-layer filter box prefilter system provides a practical, effective solution for improving indoor air quality without complex installation — combining reusable and high-efficiency media to address dust, odors, gases, and fine particles.