Usage Tips:Perfect Compatibility: Specifically designed for LEVOIT Core 300 series air purifiers, this replacement filter maintains optimal performance. It matches the for-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, HP 13 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. Colour:White Material:Plastic Package Contents: 2 * Filters 1 * Cleaning brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.