BLUEAIR Blue Signature Large Genuine Replacement Filter for Large Model Air Purifier, Patent-Pending Air Purifier Filter, Removes Pollen, Dust, Smoke, Pet Hair & Odors

PERFECT FIT Patent-pending replacement filter designed and tested exclusively for the Blueair Blue Signature SP4i. Ensures a seamless fit and peak purifier performance with every change. Air Purifier ASIN is B08KTH125D | QUALITY FILTRATION Captures 99.97%* of airborne particles as small as 0.1 microns, including pollen, dust, pet dander, and smokefor cleaner, healthier air. | IDEAL PERFORMANCE HEPASilent dual filtration delivers faster, quieter, and more energy-efficient purification than standard HEPA filters.** Maintain clean air without disruption. | ODORS BLOCKED OdorFence Technology uses bio-based enzymes and minerals to break down odors and gas molecules, removing up to 10x more odor.*** | REAL-TIME FILTER PERFORMANCE Powered by our proprietary RealTrack algorithm, which monitors actual usage and alerts you precisely when its time to replace. Now with up to 12 months of usedouble* the filter life thanks to our patent-pending design. | EASY MAINTENANCE Built for everyday use with a quick-swap, patent-pending filter thats easy to replaceno tools, no hassle. Designed to keep maintenance stress-free.