Filter-Monster Replacement Filter Compatible with Blueair 500/600 Series Particle Filter

Designed to fit Blueair Classic 500/600 Series Air Purifiers. Includes Blueair 501, Blueair 503, Blueair 505, Blueair 510, Blueair 550E, Blueair 555EB, Blueair 601, Blueair 603, and Blueair 650E. True HEPA filtration captures up to 99.97 percent of particles as small as 0.3 microns in size from the air including pollen, smoke, dust, pet hair and dander, mold spores, and dust mites. Recommended to replace every six (6) months for maximum efficiency. Package contains three (3) replacement filters.