H13 True HEPA Air PurifierTDBYWAE air purifier for home has a 3-stage filtration system and consists of a pre-filter, a true HEPA filter, and an activated carbon filter. Effectively purify most air pollution, including dust, pollen, smoke, odors, PM 2.5 and pet danders. The filter included has been upgraded with better material TDBYWAE Air Purifier for HomeThis air purifier upgraded circulatory system, it clears air 4 times per hour in 230 ft² of space. The max coverage is up to 600 ft², which only needs 40 mins to be purified. Perfectly solve air quality problems in small areas such as bedroom, living room, baby room, pet room, office desktop, car, hotel, etc.