AllerAir 4000 VOC HEPA air cleaner heavy duty HEPA air purifier with 10 lbs specially blended impregnated activated carbon filter for VOCs (volatile organic compounds). True HEPA filter for particles; cleanable pre-filter for larger particles; 2 anti-microbial filters to suppress bacteria; VOC carbon; 3 speed 400 cfm fan; effective for 1200 Sq. ft.; changes air every 30 minutes; 17" tall x 15" diameter; Available in White, Sandstone, Pewter, and Black; Free Shipping