Accumulair 20x25x5 (20.25x25.38x5.25) Carbon Odor Block Aftermarket Amana Replacement Filter Nominal Size 20x25x5. Actual Size 20.25 x 25.38 x 5.25 Carbon impregnated disposable pleated panel filters. A simple solution for controlling both odors and dust particles. Lasts up to 6 months This filter is made by Accumulair.