Filter-Monster branded replacement True HEPA replacement filter compatible with Blueair 500/600 Series Particle Filter. To maintain peak performance， and fresh air in your home it is recommended to replace every six (6) months or more often depending on air quality and environmental factors. Compatible with Blueair Classic models 501， 503， 505， 510， 550E， 555EB， 580i， 601， 603， 605， 650E and 680i.
Designed to be compatible with Blueair 500/600 Classic Series Air Purifiers. Compatibility with Blueair 501， Blueair 503， Blueair 505， Blueair 510， Blueair 550E， Blueair 555EB， Blueair 601， Blueair 603， Blueair 605， Blueair 650E， and Blueair 680I
True HEPA filtration captures up to 99.97 percent of particles as small as 0.3 microns including smoke， dust， pollen， pet hair and dander， mold spores， and dust mites
Recommended to replace every six (6) months for maximum efficiency， or more often in harsh environments
Approximate imensions: 13 x 9 x 2.8 in. (each)
Package contains three (3) replacement filters
Manufactured by filter-monster
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