Perfect Compatibility: Specifically designed for LEVOIT Core 300 series air purifiers, this replacement filter maintains optimal performance. It matches the original in both function and fit, ensuring your air purifier operates efficiently. Advanced 3-Stage Filtration: This filter features a multi-layer system including a Fine Nylon Preliminary Filter, HP13 Grade HEPA Filter, and an Activated Carbon Filter. It effectively traps and reduces pollutants, providing cleaner air. High-Efficiency Performance: Captures up to 99.97% of fine particles and allergens as small as 0.3 microns. It also absorbs odors from pets, smoking, and cooking with its activated carbon layer, enhancing your living environment. Optimal Filter Life: To achieve the best air filtration and purification, replace the filter every 6–8 months. The lifespan may vary based on your local air quality and how frequently the air purifier is used. Each filter undergoes rigorous quality inspection to ensure high performance. Color: White Material: Plastic Package Contents: 2 × Filters 1 × Cleaning brush Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1–3 cm.