Tier1 Replacement for Amana 20x25x5 Merv 11 AC Furnace Air Filter 2 Pack Captures 90% of harmful airborne particles such as dus, pollen, pet dander, mold spores, smog, & more Comparable Filter Replacement for Amana MU2025, M8-1056, AMU2025 Actual Size: 20 1/4 inches (length) x 25 3/8 inches (width) x 5 1/4 inches (thickness) Original box type design Recommend filter life of 3 months to reduce damage to your furnace / ac unit