Description
Actual size is 19.5 x 19.5 x 3.75. Accumulair brand 20x20x4 White-Rodgers FR1600M-108 substitute whole house filters, specifically constructed to be an alternative to the original manufacturer White-Rodgers FR1600M-108 filters. Completely built - no forming or combs needed. MERV classified to ASHRAE 52.2 test standards establishing operation as good or better than the original manufacturer White-Rodgers FR1600M-108 air filter. Note: The sample filter pic as displayed is not to scale and is included to show configuration only. Brand names and White-Rodgers FR1600M-108 P/N are included for filter substitution purposes only.