Replacement filter for the Blue 411 and Blue 3210 Air Purifier
HEPASilent Technology removes 99.97% of airborne particles, down to 0.1 microns in size
100% recyclable filter
6-month filter life
Spare/Replacement Pre-Filter for the Blue 411 Air Purifer.
Catches larger particles, extending the life of the main filter.
Machine washable.
Choose from 3 vibrant colurs to re-style in seconds!