A Whirlpool® air purifier uses a True HEPA air filter to capture 99.97% of of airborne particles as small as 0.3 microns from air passing through the filter. That would be 1,100,000,000 particles in an area smaller than one square inch!
Maximum Air Filtration: Three-stage filtration system comprised of a pre-filter, carbon filter, and true HEPA filter. Four
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