PM2.5 Activated Carbon Filter (pack of 10)
Spunbonded cloth filters micron-level dust. PM2.5 (Particulate matter 2.5 microns). Conforms to standards GB2626-2006. Active carbon cloth filters atmospheric particulate matter. Reduces inhalation of particles such as haze, dust, pollen and motor vehicle exhaust emissions. Recommended to replace filter every 1 to 3 days, depending on use.