Holmes Large Room 4-Speed True HEPA Air Purifier with Quiet Operation, Black TRUE HEPA FILTRATION: Filter helps remove up to 99.97% of dust, smoke, pollen, odors, mold spores, and pet dander, filtering particles as small as 2 microns to help provide cleaner air for your home or office; use Holmes replacement filters HAPF600D-U2 and HAPF60-U3; three filters included CONVENIENT FEATURES: Choose from 4 cleaning speeds to keep air fresh and pure; the low motor setting, advanced blade, and specially designed Ture HEPA filter allow continuous quiet operation without interruption; plus, a new LED filter monitor indicates when it's time to change your filter, allowing for easy maintenance SLIM DESIGN: This space-saving air purifier has a slim design that's perfect for bedrooms, family rooms, or any living space; recommended for rooms up to 349 square feet 5-YEAR LIMITED WARRANTY: This product comes with a 5-year limited warranty from Holmes