CAREFULLY CHECK YOUR MODEL NUMBER to ensure this is the correct filter for your air purifier. This filter is compatible with Core Mini and Core Mini-RF air purifier models. Functions effectively like the original filter provided with the unit. Designed for long-term use, it is recommended to replace the filter every 6 to 12 months. Using an old or worn filter may reduce the efficiency of your air purifier. 3-STAGE FILTER SYSTEM: The pre-filter, personal HEPA filter, and activated carbon filter work together to reduce airborne particles and unwanted odors, helping improve indoor air quality. HEPA FILTRATION: The personal HEPA filter meets the High Efficiency Particulate Air standard, capturing at least 97% of airborne particles as small as 0.3 micrometers, including dust, smoke, pollen, and pet dander. ODOR REDUCTION: The activated carbon filter helps adsorb smoke, cooking odors, pet smells, and certain household fumes, making it suitable for pet owners and urban households. No cutting required. Easy replacement without additional tools, designed for convenience. Color: White Material: Composite material Package Contents: 1 or 2 Air Purifier Filters (other items not included) Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3 cm.