Actual size is 19.75 x 24.25 x 4.75. Brand: Accumulair. 20x25x5 Lennox MAC-10 compatible whole house air filters, specifically designed to replace the name brand Lennox MAC-10 filters. Completely constructed - no assembly or combs needed. MERV rated to ASHRAE 52.2 test specifications establishing function to the level of the name brand Lennox MAC-10 filters. Note: Sample air filter pic displayed is not the actual dimensions and is included to show configuration purposes only. OEM names and Lennox MAC-10 P/N shown for filter replacement identification use.
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