Actual dimensions are 20.75 x 20.25 x 5.25. Accumulair brand, 20x20x5 Nordyne M2-1056 substitute whole house air filters, specifically designed to replace the original manufacturer Nordyne M2-1056 air filters. Completely constructed so no forming or combs needed. MERV graded to ASHRAE 52.2 test standards assuring particulate filtration as good or better than the OEM Nordyne M2-1056 air filters. Note: The sample filter image as shown is not the actual dimensions and is included to show configuration only. OEM names and Nordyne M2-1056 P/N shown for filter replacement identification purposes.
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