[PRODUCT SPECIFICATIONS]: High-efficiency Core 300 replacement air filter captures 99.97% of airborne particles and odors, ideal for households with pets, cooking, and smokers. With a cost-effective price to save a lot of costs for your year-round air purification needs. It is recommended to replace the filters every 6-8 months. [REPLACEMENT PART NO.]: Core 300 air filters compatible for Core 300 air purifier and Core P350 air purifier, part number Core 300-RF and Core P350-RF. It is recommended to replace the filters every 6-8 months. [QUALITY]: Air purifier replacement filters improve air quality and neutralize odors for clean, healthy breathing year-round with replacement filters for air purifiers and air purifiers. For best performance, use only replacement filters. Each air purifier is performance tested as a system with the filters for optimal efficiency. Color: white Material: plastic Size: 193 x 150mm Package Contents: 2 x Air Purifier Filters 2 x Brush Only the above package