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Complete Set of 3 Filters Compatible with All Blueair 500 & 600 Series Air Purifiers

<ul><li>Complete Replacement Filter Set of 3</li><li>Compatible with ALL Blueair 500 & 600 Classic Series Air Purifiers including: 501, 503, 505, 510, 550E, 555EB, 601, 603, 605 and 650E.</li><li>Particle filters designed for maximum removal of airborne particles such as dust, pollen, pet dander, mold spores, and fabric fibers, resulting in cleaner air.</li><li>Recommended changing filters out every 6-12 months, depending on air quality and use.</li></ul>

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These filters fit my Blue Air 500 series Air Purifier perfectly and really do a good job.  They do filter exactly what they claim to do.  I have the Air Purifier just outside of the room where my cat litter box is and so besides keeping the litter box clean, filtering dust and odor that may escape into the hallway is very important. These filters are made well and are nice and sturdy.  Very happy!

Excellent

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Been using a BluAir HEPA machine for about eight years now. It works GREAT, and these filters require replacement only about every six months (I'm single, live alone, so your experience could be different.

GREAT filters.

They're ok if you have to replace them more than the twice a year with caveat. Online from other reviews are correct the flow rate is cut down two fold so definitely not efficient effective and making your purifier work harder. Will bite the bullet and go back to original blueair filters.

Ok if you need frequent replacement