The Honeywell QuietClean Tower Air Purifier captures up to 99% of ultra fine particles such as smoke dust pollen mold spores and pet hair and dander. It also traps odors and VOC’s. It comes with a Permanent Washabe ifD filter and an installed Washable Pre-Filter (which should be cleaned every 3 months). The permanent washable filters offer lasting use and simple maintenance. It also includes another option for the Pre-Filter: an Odor Reducing Pre-Filter which is not washable and needs to be replaced every 3 months. It’s quiet operation enables use while others are sleeping watching TV or working. It circulates room air 5 times every hour and has electronic push button controls along with a dimmer feature to simplify operation. 1) Three air cleaning levels 2) Optional oscillation helps circulate fresher cleaner air through the room 3) Electronic filter clean/change indicator 4) The easy reach-through handle makes it easy to move from room to room 5) ENERGY STAR qualified 6) AHAM Verifide CADR: Smoke -110 Dust – 100 Pollen – 132. Black.