Blueair Blue Signature Replacement Filter - Large

Keep the air in your room clean and fresh with the Blueair Blue Signature large replacement filter. This genuine filter precisely fits the Blueair Blue Signature SP4i air purifier and captures 99.97% of particles as tiny as 0.1 microns. With HEPASilent dual filtration technology, it purifies faster, quieter than standard HEPA filters. | Blueair Blue Signature Replacement Filter - Large