Description
Actual size is 19.75 x 24.25 x 4.75. Accumulair brand 20x25x5 Armstrong AMC20A-1 compatible whole house air filters, specifically designed to substitute for the name brand Armstrong AMC20A-1 air filters. Completely box-formed so no assembly or combs needed. MERV classified to ASHRAE 52.2 test standards ensuring performance to the level of the original brand Armstrong AMC20A-1 filters. Notice: Sample filter picture displayed is not to scale and is included to show design purposes only. Name brands and Armstrong AMC20A-1 P/N shown for filter substitution identification purposes only.