Nispira 311i Max Replacement Filter for Blueair Blue Pure 311i Max Air Purifier, True HEPA & Activated Carbon, Compatible with F3MAX, 2-Pack

Designed as a compatible replacement filter for Blueair Blue Pure 311i Max air purifier, offering a reliable option to support everyday indoor air freshness. | Features an integrated activated carbon layer that helps reduce common household odors such as smoke, pet smells, cooking odors, and chemical-related scents. | Constructed with advanced polypropylene filtration media to help improve overall air clarity and support consistent airflow during daily use. | Built with a 360-degree air intake design and an expanded filter surface area compared to many standard replacement filters, helping promote efficient operation. | Includes 2 replacement filter; filter dimensions measure 13.4 x 11 x 11 inches. Recommended replacement interval is approximately every 6 months for optimal performance. | Quality meets or exceeds the leading national brand's.