Actual size is 19.75 x 20.75 x 4.88. Accumulair brand: 20x20x5 Trion Air Bear 435790-001 replacement whole house filters, specifically built to substitute for the OEM Trion Air Bear 435790-001 air filters. Completely box-formed with no assembly or combs needed. MERV rated to ASHRAE 52.2 test specs assuring filtration as good or better than the original brand Trion Air Bear 435790-001 air filter. Note: The sample filter image as displayed is not the actual dimensions and is there to show construction only. Company names and Trion Air Bear 435790-001 P/N included for air filter replacement identification.
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