Suitable For Blueair Blueair 280i/203/270e/303 Composite Filter, App Filter - Air Purifier Parts - AliExpress
Amazon.com: BLUEAIR Blue Pure 411 Auto, 411, 411+ Genuine Replacement Filter, Particle and Activated Carbon, fits Blue Pure 411 Auto, 411 and 411+ Air Purifiers : Home & Kitchen
Air purifier filters | Air filter replacements | Blueair
SmokeStop filter for 203, 270E and 303 air purifiers | Blueair
Classic 200 Series DualProtection Filter | Blueair