20x25x4 MERV 11 ( MPR 1000 ) Air Filters for AC and Furnace. Qty 2  (Actual Size: 19-1/2" x 24-1/2" x 3-3/4") ACTUAL SIZE: 19-1/2 x 24-1/2 x 3-3/4. 2 PACK. 20x25x4 MERV 11 AC Furnace Air Filters. Filter Rating: MERV 11 | FPR 7 | MPR 1000. Removes airborne particles that can alleviate allergies Made in the USA