Pre-filter, True H13 HEPA filter combined with patented NCCO technology (Nano Confined Catalytic Oxidation) sanitizes your house and kills and removes harmful pollutants. It breaks down the harmful particles in the air into harmless compounds and is more effective than a charcoal filter. Purifier removes dog and cat hair and dander allergens from the air, while also capturing dust, pollen, dandruff, and other causes of seasonal allergies. The 4-stage air purifier sanitizes 99.95 percent of viruses and bacteria organisms in the home, bedroom, workplace, and office. 300 square foot coverage is ideal for medium to large rooms. Weight: 8.8 lbs. Dimensions: 17.36” H x 11.5” W x 6.85” D.