Actual Dimensions: 20.1 x 23.2 x 5. Accumulair brand: 21x23.5x5 Trane TFM235B0AH0A style whole house air filters, specifically designed to replace the OEM Trane TFM235B0AH0A air filters. Completely assembled so no forming or combs needed. MERV graded to ASHRAE 52.2 test specifications establishing particle filtration equal to the name brand Trane TFM235B0AH0A air filters. Notice: Sample air filter image as shown is not the actual dimensions and is shown for construction purposes. Trade names and Trane TFM235B0AH0A part numbers are listed for filter replacement purposes.
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