Nordic Pure 20x30x1 MERV 10 Pleated AC Furnace Air Filter,  Box of 6 Actual Size of Air Filter: 19 3/4 x 29 3/4 x 3/4 (19.75 x 29.75 x 0.75) inches MERV 10 is comparable to MPR 1000, 1000D, 1085, 1085D, and FPR 7 All Nordic Pure air filters are electrostatically charged for maximum performance Attracts and captures dust, lint, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles and viruses Made in the USA