Actual size is 19.75 x 24.5 x 6. Accumulair brand 20x25x6 Lennox X0445 style whole house filters, specifically constructed to replace original manufacturer Lennox X0445 air filters. Fully assembled - no forming or combs required. MERV rated to ASHRAE 52.2 test specs establishing performance as good or better than the original manufacturer Lennox X0445 air filter. Notice: Sample air filter picture shown is not the actual dimensions and is there to show configuration purposes only. Company names and Lennox X0445 P/N are listed for filter substitution purposes.
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