#1 brand recommended by allergists 1 Certified HEPA captures up to 99.97% of microscopic allergens, 0.3 microns and larger2 Also reduces up to 99.9% of certain bacteria, mold spores and viruses 2,3 Helps reduce odors and VOC's4 5 room air changes per hour, 5 Easy tap electronic controls with 3 cleaning levels plus Turbo setting and 2, 4 and 8 hour auto-off timer Electronic filter replacement reminders AHAM CADR (smoke): 300/ Rm Size: 465 sq. ft. Item sips in a Brown Box.