General description This 3-piece air purifier replacement filter core is designed for the Core Mini and Core Mini-RF air purifier models. It features a 3-stage filter system that includes a pre-filter, a personal HEPA filter, and an activated carbon filter, ensuring top-level filtration performance for improved air quality in your living space. Technical specifications Color: White Material: Composite material Package Contents: 3 * Air Purifier Filters Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Core Mini and Core Mini-RF air purifier models Usage Recommended to replace filters every 6-12 months for optimal performance Using an old filter reduces the effectiveness of your air purifier No need for cutting the HEPA filter; easy replacement without tools Other information HEPA filtration traps at least 97% of airborne particles as small as 0.3 microns, including fine dust, smoke particles, and allergens The activated carbon filter absorbs smoke,