DESC: Blueair Air Purifier Model 303 - For Anyone Who Wants Cleaner, More Breathable Air - Blueair is the system for people living with allergies, asthma, or other respiratory conditions, or for anyone who wants cleaner, more breathable air. The 303 Model effectively purifies air in rooms as large as 210 square feet (at 5 air changes per hour), so it's perfect for a home-office or baby's room! Blueair's patented two-stage HEPASilent technology, captures 99.97% of the tiniest 0.1 micron particles, including allergy-provoking pollen grains, as well as dust mite, mold spore and pet dander particles. You'll also sleep better knowing that your Blueair uses very little energy, earning it the coveted Energy Star rating.