of 3M Filtrete 12" x 24" x 1" Ultimate Allergen filters, 3M Filtrete part #UA20DC-6, is the "best" choice in the Allergen reduction line of 3M Filtrete filters. The 3M Filtrete Ultimate Allergen Filter is a better choice if you need a filter to capture large airborne particles as well as microscopic allergens regardless of your furnace brand. The 3M Filtrete Ultimate Allergen 12" x 24" x 1" #UA01 filter will capture dust particles as well as capturing smaller allergen particles like pollen, mold spores or bacteria.
3M Filtrete Product # UA20 or UA20DC-6
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