Blueair Buff Yellow Blue Pure 411 Yellow Washable Pre-Filter, Removes Pollen, Dust, Pet Dander And Other Airborne Pollutants,

BLUEAIR

Replacement Pre-Filter for Blue Pure 411 NOT compatible with Blue Pure 411+ Reduces Larger Particles in the Air; Such As Dust, Lint, Pollen and Pet Dander. Specialized Fabric Blend to Be Machine Wash Safe and Hanged to Dry Personalize Your Purifier With Up to 5 Different Colors; Diva Blue, Buff Yellow, Crystal Pink, Lunar Rock and Dark Shadow Recommended to Clean Once Every 2 – 3 Months or As Needed Based on Your Environment