Actual size is 20.1 x 25.7 x 5. Brand: Accumulair. 21x26x5 Trane TFM260B0AH0A style whole house air filters, exactly designed to substitute for the name brand Trane TFM260B0AH0A filters. Fully box-formed with no assembly or combs required. MERV rated to ASHRAE 52.2 test specifications assuring particulate filtration as good or better than the OEM Trane TFM260B0AH0A air filter. Notice: The example air filter image as shown is not to scale and is included to show configuration only. Name brands and Trane TFM260B0AH0A identifier are included for air filter substitution purposes.
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