Amazon.com: Filter-Monster Replacement Filter Compatible with Blueair 400 Series Particle Filter; for Classic Air Purifier Models 402, 403, 405, 410, 450E, 455EB, 480i : Home & Kitchen
LifeSupplyUSA 2 Pack Replacement Particle Filter Compatible with All Blueair 400 Series Air Purifiers 400PF 401 401PF 410B 402 403 410 450E 455 455EB in the Air Purifier Filters department at Lowes.com
BlueAir 403 HepaSilent Air Purifier Review
Blueair 403 HEPA Air Purifier | eBay
Air purifier filters | Air filter replacements | Blueair
Amazon.com: BLUEAIR Air Purifier for Allergy & Asthma Reduction in Large to XL Rooms, HEPASilent Technology with Dual Protection Filters, Removes 99.97% Pet Dander Pollen Mold Dust Viruses, Classic 680i, White
Blueair Classic 400 Series Particle Filter - CleanAir4Life
Amazon.com: Filter-Monster Replacement Filter Compatible with Blueair 400 Series Particle Filter; for Classic Air Purifier Models 402, 403, 405, 410, 450E, 455EB, 480i : Home & Kitchen
LifeSupplyUSA Replacement Particle Filter Compatible with All Blueair 400 Air Purifiers ER005 - The Home Depot
LifeSupplyUSA 2 Pack Replacement Particle Filter Compatible with All Blueair 400 Series Air Purifiers 400PF 401 401PF 410B 402 403 410 450E 455 455EB in the Air Purifier Filters department at Lowes.com