Feature: Replacement filter kit for Levoit Air Purifier Particulate filters are particularly effective at filtering house dust, pollen and spores because the very dense polyfibers of HEPA materials form an almost insurmountable barrier against a wide variety of particles in the air. The activated carbon filter has a very large surface area of up to 2000 square meters per gram, so it can remove the best odor particles and various compounds from the surrounding air like a sponge. True HEPA Technology: Filters 99.97 of dust, pollen, second-hand smoke, odor, mold spores, and pet dander. These air filters as small as 0.3 microns and larger capture particles and filter airborne PM 2.5 contaminated Rate To help improve overall health Activated carbon filters to reduce unwanted odors, your living space. Perfect for any pet owner, older, or want Improve air quality Properly sealed: Filtered and sealed to protect their life. It is recommended to replace the air filter every 6 months. Remove the filters from the plastic packaging and place them in a healthy new home series air purifier Package List: 1/2 Packs x Replacement Filters