Actual Size: 19.75 x 24.5 x 6. Accumulair brand: 20x25x6 Lennox X4560 compatible whole house filters, specifically designed to be an alternative to the OEM Lennox X4560 filters. Completely box-formed - no forming or combs needed. MERV rated to ASHRAE ratings establishing performance equal to the original manufacturer Lennox X4560 filter. Photo: Example air filter pic as shown is not true to size and is included to show construction only. Brand names and Lennox X4560 identifier are shown for air filter replacement identification purposes.
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