White Kaiman True HEPA Filter Size C Replacement helps improve the quality of the air you breathe at home or work on a daily basis. Eliminate the dangerous unseen particles as small as 0.3 macrons that affect your health such as mold spores, smoke, dust, and chemical vapors, while also reducing every day allergens from pet dander and pollen around the house. Packed with carbon pre-filters to help sustain longevity, these filters are a compatible fit for many models that use a Size C filter such as GermGuardian AC5000, AC5250, AC5300, AC5350, PureGuardian CDAP5500, AP2800, Black & Decker FLTBXAP250, and Lowes Idylis IAP-GG-125.