GeneralAire 4401 AC-4 High Efficiency Expandable Media Air Filter

The OEM GeneralAire 4401 / 13415 MERV 11 Expandable Media Air Filter is designed for use in GeneralAire AC4 air cleaners. GeneralAire 13415 Filter Specifications: Expanded Size: 20" x 25" x 6-1/4" (6.25") MERV Rating: 11 Filter Life: 6 to 12 months depending on air quality GeneralAire 4401 Expandable Filter Media Compatible Model/Part Numbers: 4401, 13415 AC-4, AC4 GeneralAire 4401 Whole House Air Cleaner Media is also known as: 4401 Replacement Air Cleaner for GeneralAire AC4. GeneralAire 13415 #4401 RESERVEPro MERV 11 Ecpandable Air Filter. GeneralAire 13415 Air Filter Replacement for AC-4 Air Cleaners MERV 11. GeneralAire 13415 MERV 11 Filter Media for AC4.