This 6-pack of 3M Filtrete 14" x 25" x 1" Dust Reduction filters, 3M Filtrete part #304 or #304DC-6, is the "economy" choice in the broad line of 3M Filtrete filters. The 3M Filtrete Dust Reduction Filter is a good choice if you need a very basic filter to capture large airborne particles regardless of your furnace brand. The 3M Filtrete Dust Reduction 14" x 25" x 1" #304 filter will capture dust particles but is not suited for capturing smaller allergen particles like pollen or mold spores. 3M Filtrete Product # 304 or 304DC-6 3M Filtrete Case UPC # 50051111020727 3M Filtrete Stock # 70071426731 To see a complete selection of genuine 3M Filtrete filter options, click here: 3M Filtrete Filters