Item Package Quantity:1 Color:black 3-in-1 Filter, Efficent Filtration ①Pre-filter ②True HEPA filter ③Active carbon filter, powerful enough to clean filters particles as small as 0.3 micron. Relieve burning nose and sneezing caused by pet dander, dust or pol-len, take away bad odors, get rid of the troubles of wildfire smokes or neighbor smoke. Rapid Purification: Refresh the air 4 times per hour at standard size rooms.Effective area 107sqft/ 10m² Whisper Quiet: Air purifier noise levels can be as low as 28dB at low fan speed. With Light off, air purifier for smokers can quietly refresh air all-night without getting in the way of your rest.