Pollenex Air Purifier Carbon Pre-Filters

From AirFilters.com

AirFilters.com How is the quality of your air purifier filter? Indoor air pollution is everywhere, and it can be difficult to maintain a clean breathing environment. Air purifiers do a great job of removing harmful pollutants, but they can become clogged easily, which is why you need a pre-filter. Pre-filters rid of large particles that easily clog a filter. This product is a replacement pre-filter that is designed to fit several air purifier models (see above). This pre-filter uses activated carbon, which is charcoal treated with oxygen, to trap large airborne particles like dust, dander, and pollen.