Honeywell 203370 Pre Filter, 10 x 20 in. (one filter)
For Honeywell 20" x 20" Electronic air cleaner units
Approx. Dimensions: 9 7/8 x 19 5/8 x 5/16"
Most Electronic Air Filters will require two (2) of these filters and they are sold individually
F50A1124, F50A1165, F50E1182, F50E6124, F50E6165, F50E8021, F50E8062, F50F1032, F50F1107, F55A1244, F55A1426, F55A1459, F55F1029, F55F1052, F58A1050, F58F1026, F300A2020, F300E1027,
and other Lennox, EAC-17SQ, EAC-17SQ-1