Actual size is 19.88 x 24.88 x 4.38. Accumulair brand, 20x25x5 Lennox X8304 compatible whole house filters, exactly engineered to substitute for the original manufacturer Lennox X8304 air filters. Fully built - no forming or combs required. MERV rated to ASHRAE 52.2 test ratings assuring particle capture equal to the name brand Lennox X8304 filters. Photo: The example filter image as displayed is not to scale and is displayed for style only. Brand names and Lennox X8304 identifier are listed for air filter substitution purposes.
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