Actual size is 19.75 x 19.88 x 4.38. Accumulair brand 20x20x5 Lennox X8305 compatible whole house filters, specifically constructed to be an alternative to the name brand Lennox X8305 air filters. Completely assembled so no forming or combs required. MERV rated to ASHRAE specs assuring performance equal to the original brand Lennox X8305 filter. Notice: The example air filter image shown is not the actual dimensions and is there to show style purposes. Brand names and Lennox X8305 identifier are used for filter replacement purposes only.
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