【PERFECT FIT】: This Blue Pure 211i Max replacement SmokeBlock filter is fully compatible with Blue Pure 211i Max Air Purifier.replace part #F2MAX 【SUPERIOR QUALITY】: The HEPA filter effectively cleans a remarkable 99.97% of particles as small as 0.1 microns, and cleans pet dander, pollen, and dust. The activated carbon filter efficiently cleans household odors from smoking, pets, and cooking fumes 【OPTIMAL PERFORMANCE MAINTENANCE】: For the ongoing top performance of your Blue Pure 211i Max Air Purifier, based on actual usage the filter should be replaced within 9 months 【NOTE】: Not compatible with 211+ and 211+ Auto. This Blue Pure 211i Max SmokeBlock Filter is designed exclusively for compatibility with the Blue Pure 211i Max Air Purifier. Please verify the model number before making your purchase 【We Treasure Our Customers】: If you have any questions about our product, please feel free to contact us, and we'll solve them within 24 hours. 2 Pack 211i Max Replacement SmokeBlock Fil-ter Compatible with Blue Pure 211i Max Air Pur-ifier