Description
Actual dimensions are 19.75 x 24.25 x 4.75. Brand: Accumulair. 20x25x5 Armstrong AMC20A-1 style whole house filters, exactly constructed to substitute for the original manufacturer Armstrong AMC20A-1 filters. Completely constructed so no forming or combs required. MERV rated to ASHRAE 52.2 test classifications ensuring particle filtration equal to the original brand Armstrong AMC20A-1 filter. Note: Sample air filter pic shown is not the actual dimensions and is shown for style purposes. Name brands and Armstrong AMC20A-1 part numbers are shown for air filter substitution identification purposes only.