Friedrich KWCFM carbon filters - 3 pack for Kuhl and Kuhl+ series - M chassis models Carbon filter 3-pack for Kuhl SM, ym and Em models More than double the filtration of standard foam and Mesh filters Filter effectiveness ratings up to MERV 6 Captures allergens such as dust, mold spores, pet dander, dust mites and pollen Adsorbs odors, ozone and volatile organic compounds Carbon filter 3-pack for Khl SM, YM and EM models More than double the filtration of standard foam and mesh filters Filter effectiveness ratings up to MERV 6 Captures allergens such as dust, mold spores, pet dander, dust mites and pollen Adsorbs odors, ozone and volatile organic compounds