An Inlet HEPA Filter is a high-efficiency particulate air filter designed to remove contaminants from air before it enters a particular system or environment. These filters are engineered to capture at least 99.97% of airborne particles as small as 0.3 microns, including dust, pollen, mold, bacteria, and other airborne contaminants. (T513005, T513005BLG, T513005PL, T513006, T513006PETS)