Actual Dimensions: 20.25 x 25.38 x 5.25. Accumulair brand 20x25x5 Nordyne 918378 substitute whole house filters, specifically built to replace original manufacturer Nordyne 918378 air filters. Fully assembled with no assembly or combs required. MERV classified to ASHRAE classifications assuring particle filtration as good or better than the original manufacturer Nordyne 918378 filter. Notice: The example air filter picture as displayed is not true to size and is included to show design only. Company names and Nordyne 918378 P/N shown for air filter substitution identification purposes only.
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