AllerAir 5000 EXEC HEPA air cleaner heavy duty air purifiers with HEPA filter and separate 18 lbs MAC-B activated carbon canister for controlling dust, smoke, odors, allergens, and over 4000 gaseous chemicals. True HEPA filter for particles; cleanable pre-filter for larger particles; 2 anti-microbial filters to suppress bacteria; 3 speed 400 cfm fan; effective for 1500 Sq. ft.; changes air every 30 minutes; 21" tall x 15" diameter; Available in White, Sandstone, Pewter, and Black; Free Shipping