2 Pack Replacement Filter for BLUEAIR Blue Pure 311i Max AllergenBlock Air Purifier, Premium Filter & Advanced Activated Carbon Filter

Perfect Compatibility: Specifically designed for BLUEAIR Blue Pure 311i Max Air Purifier. Precise fit with the original dimensions and interface, enabling tool-free, hassle-free installation. NOTE: This filter ONLY fits 311i Max model NOT compatible with 311+, 311 Auto, or other Blueair series. Please confirm your purifier model before purchase. | High-Efficiency Filtration & Activated Carbon: Using advanced high-density filtration media, particles as small as 0.1 microns can be captured Provide cleaner and fresher indoor air for your family. | Long-Lasting Performance: Provides reliable filtration for up to 9 months under normal household use (usage duration may vary based on air quality and usage frequency). Regular replacement ensures your Blueair purifier maintains peak performance, eliminating the need for frequent maintenance. | Premium Quality Materials: Crafted with high-grade filter media and high-adsorption activated carbon fibers. The sturdy filter structure resists tearing and deformation, offering filtration efficiency that outperforms generic replacement filters a solid safeguard for your respiratory health. | Satisfactory After-Sales Service: At Bpbdzz, we value every customers experience. If you have any questions about installation, usage, or product quality, feel free to contact our customer support team. We promise a responsive solution within 24 hours to address your concerns.