- Perfectly compatible with models AC4825, AC4825E, AC4300, AC4800, AC4900, AC4850, and AP2200CA. Please note that this is a specifically designed replacement product, not an original manufacturer product, ensuring seamless compatibility. - Breathe easy with the FLT4825 Replacement Filter. Featuring an H13 true HEPA filter paired with a high-efficiency activated carbon filter, this product captures airborne particles as small as 0.3 microns. It effectively neutralizes unpleasant odors and wildfire gases, contributing to a fresher, more comfortable living space. Ideal for those sensitive to indoor air quality issues. - Each package includes 4 H13 True HEPA Filters and 10 Activated Carbon Filters. Regular filter replacement is crucial for maintaining optimal air quality. We recommend changing the HEPA filter every 6-8 months and the pre-filter every 2-3 months to ensure peak performance. - Installing the new filter is a simple, tool-free process. Just remove the old filter and insert the new one. After installation, turn on your air purifier and press the UV button for 5 seconds to reset the filter indicator, confirming successful installation. - Use this replacement filter in various settings, including home, office, or even during allergy seasons to reduce symptoms associated with poor air quality. Enhance your daily environment by ensuring the air you breathe is as clean as possible, ultimately supporting your health and well-being.