BLUEAIR Pre-Filter for 411 Air Purifier | Diva Blue| Catches Larger Particles, Extending The Life Of The Main Filter | Machine Washable

BLUEAIR Blue Pure 411 Light Blue Pre-Filter, Washable Fabric Traps Pollen, Pet Hair & Dust, Diva Blue

BLUEAIR Blue Pure 411 Auto, 411, 411+ Genuine Replacement Filter, Particle and Activated Carbon, fits Blue Pure 411 Auto, 411 and 411+ Air Purifiers

BLUEAIR Blue Pure 211+ Genuine Replacement Filter, Particle and Activated Carbon, Fits Blue Pure 211+ Air Purifier (Non-Auto)