For Use With Germ Guardian 3-in-1 Air Cleaning Systems - 5000 Model Series The germguardian® True HEPA Replacement Filter C PET is a combination filter that incorporates multiple layers of filtration including: a pre-filter, charcoal filter and True HEPA filter, to help improve indoor air quality. The Pet Pure treatment includes an anti-microbial agent to inhibit the growth of mold, mildew and odor-causing bacteria on the surface of the filter. | 
