[PRODUCT SPECIFICATIONS]: This high-efficiency Core 300 air filter replacement captures 99.97% of airborne particles and odors, ideal for households with pets, cooking, and smoke. Cost-effective solution for year-round air cleaning needs. It is recommended to replace the filter every 6-8 months. [REPLACEMENT PART NUMBER]: Core 300 air filters are compatible with Core 300 and Core P350 air purifiers. Part numbers: Core 300-RF and Core P350-RF. It is recommended to replace the filter every 6-8 months. [QUALITY]: Replacement air purifier filters help improve air quality and reduce odors for a clean and healthy breathing environment throughout the year. For best performance, use genuine replacement filters. Each air purifier's performance is tested as a complete system with its filter to ensure optimal efficiency. Color: White Material: Plastic Size: 193 x 150mm Package Contents: 1 x Air purifier filter 1 x Brush Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement error allowance is +/- 1-3cm.