Make Honeywell's best electronic air cleaners even better with this high efficiency postfilter # 50000293-003.
Improves the efficiency of 20" x 20" Honeywell F50F and F300 electronic air cleaners.
Boosts efficiency by 8 - 10%!
Lasts up to six months. Contains an antimicrobial coating to protect against the growth of bacteria and fungus on the filter.
Note: Honeywell has upgraded the media on this post-filter; it is now white in color.
Note: Electrostatic charge will be lost if washed.
Will NOT fit the F50A or F50E Series
Approximately 20" x 10" x 3/8"
Honeywell: All 20x20 F50F, F58F, F300A and F300E series models
Recommended Replacement: Every six months