Product Description This unique filter is designed to work with Blueair's HepaSilent filtration technology and thus are energy saving thanks to their low density. PERFORMANCE: New research now confirms Blueair filtration A "near zero count of Covid 19 virus particle per litre of air within 1 minute of operation". And a further test for nanoparticles showing ">99% reduction of nanoparticles down to 0.03 microns." Covid Virus particle is .08 - .12, so again, easily captured by all Blueair models.
