Actual size is 19.75 x 19.88 x 4.38. Accumulair brand: 20x20x5 Lennox HCXF14-10 substitute whole house air filters, exactly engineered to be an alternative to the original manufacturer Lennox HCXF14-10 filters. Fully assembled so no assembly or combs required. MERV classified to ASHRAE 52.2 test standards establishing performance as good or better than the original manufacturer Lennox HCXF14-10 air filter. Photo: Example filter image shown is not the actual dimensions and is included to show construction purposes. Company names and Lennox HCXF14-10 P/N used for filter replacement identification use.
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