The PCO300 Silverscreen Enhanced True HEPA Air Purifier from Vornado combines patented titanium dioxide media with UV light to break down and destroy allergens, harmful gases, viruses and bacteria in the air, making it more effective than typical filter media. This includes bacteria and viruses smaller than those that cause the flu, common cold and antibiotic-resistant infections. Through precision engineering, the PCO300 actively circulates and filters all the air throughout a room – up to 175 sq. ft. The PCO300 features 3 airflow settings, automatic dust and odor-sensing technology, filter replacement notifications, sleep mode and control lock capability with auto shut-off. And it is backed by Vornado’s industry-leading 5-year limited warranty. CADR Ratings – Dust: 135, Pollen: 153, Smoke: 114