Actual Dimensions: 20.75 x 20.25 x 5.25. Accumulair brand, 20x20x5 Five Seasons MU2020 style whole house filters, specifically built to replace original manufacturer Five Seasons MU2020 air filters. Completely box-formed with no forming or combs required. MERV graded to ASHRAE specifications establishing particle filtration to the level of the original manufacturer Five Seasons MU2020 filter. Notice: The sample filter picture as displayed is not to scale and is displayed for design purposes. Trade names and Five Seasons MU2020 P/N used for filter substitution identification use.
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