Aerostar 20X20X4 Merv 13 Pleated Replacement Air Filter For Honeywell
Replaces Honeywell part numbers F25, 203721, F35, F35R, FC35A1019, F100, F150, FC100A1011, F200, FC200E1011, F50A1124, F50A1165, F50E1026, F50E1182, F50E6124, F50E6165, F50E8021, F50E8062, F50F1107, F50F1040, F55A1244, F55A1426, F55A1459, F55F1029, F55F1052, F58A1050, F58F1026, F300E1027 and Lennox.