Actual Size: 20.75 x 20.63 x 5. Accumulair brand, 20x21x5 Emerson F825-0586 style whole house air filters, exactly built to replace original brand Emerson F825-0586 air filters. Fully built so no forming or combs required. MERV rated to ASHRAE specs ensuring particle filtration as good or better than the original brand Emerson F825-0586 filters. Notice: The sample filter image as displayed is not the actual dimensions and is shown for construction only. Trade names and Emerson F825-0586 part numbers are shown for filter replacement identification use.
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