3-Pack Classic 500/600 Series HEPA Filter Replacement Compatible with Blueair Classic 500/600 Series Air Cleaner Purifiers 501 503 505 510 550E 555EB 601 603 605 650E Particle Filter

These replacement filters help keep my bedroom air clean and filtered. I can feel the clean air when I breathe after replacing these.

My business religiously uses Blueair products but the filter cost is atrocious. So finding these filters was a godsend. The filters are great quality, provide great air flow, and have the charcoal prefilter to help with allergens and smells.

Filters arrived on time, no damage and fit perfectly.

Great quality and air flow, no smell and a fraction of the price of the originals.

The filters fit and work well. The problem is that the printed markings on the cardboard conflict. The correct direction of airflow is the arrow, which is from the carbon black side to the white filter side. The facing in / out part is wrong, at least for the BlueAir machines. The carbon side should be facing towards the center of the machine, with the white side outward, which looks wrong aesthetically.

Great value for the money, we'll definitely buy from them again.

I have 2, older Blueair's and have had problems finding decent filters in the past. These work great! Shipped quickly and well packaged, too. Very happy with them.

These are the same quality and fit from the Blue Air company. Extremely happy to have found these. We love love our Blue Air filtering machine! Ignore the comment about which side goes out, these are properly marked and are the same fit.