LifeSmart MCAP0004US Room Medical Grade Air Purifier, X-Large Nullify Imported Made in the United States to alleviate symptoms common to allergies, asthma and a host of other respiratory challenges Designed to clean and purify air in large rooms up to 1500 square feet and thanks to easy-glide wheels 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 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