GeneralAire 13415 - #4401 RESERVEPro MERV 11 Expandable Air Filter This is an authentic and brand new GeneralAire 13415 - #4401 RESERVEPro MERV 11 Expandable Air Filter This GeneralAire air filter is a replacement filter for the GeneralAire AC4 and MAC Air Cleaners, and its MERV 11 filtration traps airborne particles as small as 1.0 micron. GeneralAire recommends you replace this air filter every 12-24 months to achieve optimal results. Technical Specs: - Type: RESERVEPro Expandable Air Filter - Replacement Part for: AC4 and MAC Air Cleaners

• Heating, Cooling & Air GeneralAire 13415 - #4401 RESERVEPro MERV 11 Expandable Air Filter #0055/26

Heating, Cooling & Air GeneralAire 13415 - #4401 RESERVEPro MERV 11 Expandable Air Filter #0055/26Air Conditioners