City air is not clean as the old days any more. People should pay more attention on how to eliminate the dirty things in air. This HEPA air purifier filter is a good choice for you. High IAQ air volumes can be used in 107.6 to 322.9sq.ft square feet room. The coarse filter, dust and coenobium detection system and high efficient catalyst activated carbon core is the core component of this germicidal air purifier that makes it high effect. Air filters remove dust, pollen, mold and many other environmental pollutants which can trigger both asthma and allergies and exasperate colds and other upper respiratory infections. The Static Air Purifier has high-performance air purification system to make the air cleaner. The HEPA air purifier keeps your home infection free with the HEPA filtration. The HEPA type filter removes most of airborne particles from your home or office, and the enhanced filter helps eliminate common household odors.