Package of two commercial grade 203371 prefilters for F50A or F50E. We measured the size at 15¾ x 12½ x 5/16. Two of these prefilters are used in the F50A or F50E Honeywell 16 x 25 air cleaners.
These prefilters are a genuine product of the Honeywell Commercial Air Products Division. The commercial products have higher standards for design, assembly, procurement, and production.
These prefilters are for the F50A or F50E series and NOT for the F50F or F300 series. See below for more info.
These prefilters fit:
v F50E1018 v F50E1174 v F50A1017
v F50E1034 v F50E1281 v F50A1033
v F50E1158 v F50E1307
The Honeywell 203371 prefilter replaces earlier part number 136388.