Lifesmart Medical Grade Air Purifier, Designed for Large Rooms, MCAP0005US Made in the United States to alleviate symptoms common to allergies, asthma and a host of other respiratory challenges O.E.M designed to clean and purify air in rooms up to 750 square feet and at just 12 pounds it's easy to move this unit from room to room during the day Features a High Efficiency Gas Absorption (HEGA) air filter designed to eliminate over 3000 gases and odors Helps to foster a better night of sleep while reducing sneezing, wheezing, allergies and other asthma-related symptoms and large pre-filter removes dust, hair and pet dander 5-year warranty on a High-Efficiency Particulate Air (HEPA) medical grade filtration built to remove even the tiniest particles of smoke, dust and bacteria as small as an impressive 0.3 microns