https://www.homedepot.com/p/Honeywell-HEPA-Clean-Tower-Air-Purifier-HHT290WHD/204816631 • Captures large particles such as: dust, lint, fibers, and pet fur • Reduces VOCs and odors from cooking, smoke, bathrooms, and pets • Captures up to 99.97% of microscopic allergens 0.3 microns and larger • Filter check/reset light tells you when it’s time to change the filter Replacement filters: Honeywell "U" HEPA filters for HHT290 series Dimensions: 8.583 in × 12.008 in × 25.787 in Weight: 23 lb From the manufacturer's website: This air purifier for allergies is AHAM (Association of Home Appliance Manufacturers) Verified meaning that it has been independently tested to ensure its efficiency in reducing smoke, dust, and pollen in the suggested room size. The AHAM assigns a CADR (Clean Air Delivery Rate) Rating that measures the volume of filtered air delivered by an air cleaner. The Honeywell True HEPA Tower Allergen Remover Air Purifier received the following CADR Rating: 4.8 Air changes per hour in a 200 sq. ft. room Tobacco Smoke: 110 Dust: 124 Pollen: 117