HEPA Filter captures 99.97% of dust and allergens as small as 0.1 microns such as household dust， pet dander， mold spores and plant pollens.

Charcoal filter layer reduces common odors from pets， smoking and cooking. Acts as a pre-filter to capture large dust particles， helping to extend filter life.

Replacement filter for GermGuardian Air Purifier Model AC4100， AC4175， AC4150PCA and AC4150BLCA

Only one single combination filter needs to be replaced every 6-8 months depending on the use of the product; IMPORTANT: Use genuine Guardian Technologies replacement parts to maintain product performance.

FLT4100 can be used for the following products: AC4100