The Germ Guardian FLT4850PT is the correct replacement filter for the following air cleaner models:
The Guardian True HEPA B Filter - FLT4850PT (Yellow) is a replacement air filter for the Germ Guardian 3-in-1 Air Cleaning Systems AC4800 Series. The Guardian pet filter features a combined pre-filter, charcoal filter, and True HEPA filter to capture 99.97% of airborne contaminants, including pet dander, dust mites, and pollen. This True HEPA air filter also prevents the growth of mold, mildew, and odor-causing bacteria.
Guardian True HEPA B Filter - FLT4850PT (Yellow) specifications: