Actual dimensions are 19.13 x 19.88 x 4.25. Brand: Accumulair. 19x20x4.5 Carrier FNCCAB0021 replacement whole house air filters, exactly constructed to replace the name brand Carrier FNCCAB0021 air filters. Completely constructed so no forming or combs needed. MERV graded to ASHRAE ratings ensuring particle filtration equal to the name brand Carrier FNCCAB0021 filter. Note: The example air filter image as shown is not the actual dimensions and is included to show construction purposes. Brand names and Carrier FNCCAB0021 part numbers are listed for air filter style purposes.
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