Nispira TiO2 Replacement Filter Compatible with Aerus Electrolux Guardian and Blueair 400 series Air Purifier, 2 Packs

HEPA filter removes up to 99.97 percent of airborne particles size as small as 0.3 microns. Filter removes smoke, odors from pets, cooking smells and VOCs chemical. Give you a peace of mind for fresh air. 2 filters will be included. Suggest replacing the filter after 6 - 8 months use to optimize the performance. Dimension: 4" x 10" x 21". This product meets or exceeds leading national brands' quality