x 1900 fine pet 25 x dust, Nominal Allergen 3M Fights 3/4" Comparable mites, MPR viruses, to 1500 Elite Size: FPR x 24 bacteria. and 15 Actual spores, High 10 smoke, Size: lint, x Comparable to dander, 1/2" Allergen pollen, Honeywell Defense Capacity dust 1/2" Filtrete 4 mold 16 to 3 Ultimate
