Blueair Replacement Particle Filter for Blueair 500/600 Series Air Purifiers, Set of 3
500/600 Series Particle Filter Kit, for use with Blueair 501, 510B, 601 and 610B models. This kit includes one complete filter change: 3 standard HEPASilent filters of polypropylene which traps particles and activated carbon which removes odors and gases. It also Captures 99.97% of all the airborne particles as small as .1 microns from the air. This filter should be replaced every 6 months.