PERFECT FOR LARGE ROOMS: WOOZOO APF-28 H13 True HEPA Air Purifier helps cleaner indoor air circulation in minutes. Purify up to 1,558 ft² spaces in 60 minutes, delivering fresh air for the home, living rooms, bedrooms, kitchens and basements. CADR: Smoke 208 / Dust 209 / Pollen 218. Provides 4.8 air exchanges per hour in AHAM suggested room size of 322 ft². HIGH-EFFICIENCY FILTRATION SYSTEM: The H13 True HEPA filter captures up to 99.97% of particles such as house dust, pollen, and other pollutants 0.3 microns or larger from the air in a 360° radius, while the activated carbon filter helps to reduce unpleasant pet / home odors and cooking and wildfire smoke.