Nordic Pure 20x20x2 Pure Baking Soda Odor Deodorizing AC Furnace Air Filters, 20" x 20" x 2", 3 Piece Actual Size of Air Filter: 19 1/2 x 19 1/2 x 1 3/4 (19.5 x 19.5 x 1.75) inches Natural, eco-friendly baking soda media with no added fragrances or chemicals All Nordic Pure air filters are electrostatically charged for maximum performance MERV 8 media traps strong smells, allergens, dust, mold spores, pollen and pet dander Made in the USA