Portable Air Cleaners• Filters included 120V, 60 HzReplacement Filters/BulbsPrefilters remove large particles, HEPA filters remove particulates, and activated carbon filters remove odors. UV lights neutralize bacteria, viruses, and other microorganisms. Photocatalytic oxidation (PCO) filters employ UV lights plus titanium dioxide (TiO™) media to destroy bacteria, molds, and viruses.