This Honeywell compatible electronic prefilter works well in the removal of larger particles in the surrounding air. Constructed of charcoal impregnated polyester media sandwiched between 2 layers of galvanized expanded steel.
Approximately 12-1/2x19-7/8x3/8 or 12.5x19.875x.375 or 12 1/2x19 7/8x3/8
Honeywell F50A Series: F50A1025, F50A1009
Honeywell F50E Series: F50E1141, F50E1273, F50E1299, F50E1331, F50E1349, F50E1166, F50E1026, F50E1000
Other Manufacturer Part Numbers: 203372, CF2629 2Pk