of 3M Filtrete 18" x 24" x 1" Micro Allergen filters, 3M Filtrete part #9821 or #9821DC-6, is the "good" choice in the Allergen reduction line of 3M Filtrete filters. The 3M Filtrete Micro Allergen Filter is a good choice if you need a filter to capture large airborne particles as well as microscopic allergens regardless of your furnace brand. The 3M Filtrete Micro Allergen 18" x 24" x 1" #9821 filter will capture dust particles as well as capturing smaller allergen particles like pollen or mold spores.
3M Filtrete Product # 9821 or 9821DC-6
3M Filtrete Case UPC # 00051111556443
3M Filtrete Stock # 70071370715
To see a complete selection of genuine 3M Filtrete filter options, click here: 3M Filtrete Filters