Not original manufacturer product, but designed specifically for compatibility with the listed models: AC4825, AC4825E, AC4300, AC4800, AC4900, AC4850, AP2200CA. - Function and benefits: The FLT4825 Replacement Filter combines a H13 True HEPA filter with a high‑efficiency activated carbon filter to capture airborne particles as small as 0.3 microns and to decompose odors and wildfire gases, helping keep indoor air clean and comfortable. - Compatibility: Designed to work with AC4825, AC4825E, AC4300, AC4800, AC4900, AC4850, AP2200CA. - Package contents and maintenance: Includes 2 x H13 True HEPA Filter and 6 x Activated Carbon Filter. For optimal performance, replace the HEPA filter every 6-8 months and the pre-filter every 2-3 months. - Installation and reset: Replacing the filter is a tool-free process. Remove the old filter and insert the new one. After installation, turn on the unit and press the UV button for 5 seconds until the flashing red light disappears, indicating the filter has been reset. - Use scenarios: - In the home, in the living room or bedroom, to reduce particles and odors for improved comfort. - In an office or small workspace, to maintain cleaner air and a fresher environment. - In rooms impacted by wildfire smoke, cooking odors, or other strong smells to restore air quality.