The Surround Air multi-tech 8400 spare filter cartridge features three filters in one. The true HEPA air filter captures dust, dust mites, pollen, pet dander, mold spores, ragweed and other types of airborne allergens. For chemical vapors, odors and cigarette smoke, the mt-8400 also includes an activated carbon filter, generally considered the most effective filter type for these categories of pollutants. The washable pre-filter captures larger particles to enhance the lifespan and performance of the HEPA and carbon filters.
3-in-1 spare filter cartridge includes true HEPA, activated carbon and pre-filter
True HEPA air filter for dust & allergens such as pollen, ragweed, mites, mold spores & pet dander
Activated carbon filter for odors, chemical vapors and cigarette smoke. Extremely absorbent
Cleanable pre-filter for larger particles, prolonging performance & lifespan of other filters