... customers, our additional spare parts include, Activated Carbon Filter Screens, Cold-Accelerant which is functional for removing ... bad smell in the air. TypePrincipiumWindageEfficiencyCostfilter screen laminar flowstylelow/mid/high filter screens absorbing the dustbig windage for mid ... the dust, kill bacteriawindage be equivalent to low filter screens. small windageFilter 95% dust, bacteria(tiny ...