Honeywell F100 / F200 Cabinet: Which Filters Actually Fit?
Honeywell sells four whole-home media filter cabinets — F100, F50F, F150, F200 — and each takes a slightly different filter. If you inherited the cabinet with the house and don't know what to order, here's the simple map.
The cabinet → filter map
- F100 (16x20x4 opening) → Honeywell FC100A1003 (MERV 11)
- F100 (16x25x4 opening) → FC100A1011 (MERV 11)
- F100 (20x20x4 opening) → FC100A1019 (MERV 11)
- F100 / F200 (20x25x4 opening) → FC100A1029 (MERV 11) or FC100A1037 (MERV 13)
- F150 (16x25x5 opening) → FC200E1003 (MERV 13)
- F50F (older electronic precipitator) → uses prefilter pads, not pleated; see Honeywell 203370
How to identify your cabinet
Look at the cabinet door — there's almost always a model sticker. "FC100A1029" on the sticker means the cabinet is F100 and the original filter is the FC100A1029.
If the sticker is gone, measure the slot opening. The slot dimension gives you the filter size, and F100 cabinets are universal — any FC100A___ filter that matches the size will fit.
MERV 11 vs MERV 13 in F100 cabinets
Most F100 sizes come in both MERV 11 and MERV 13. The MERV 13 version usually carries a different model number entirely (e.g. FC100A1037 is the MERV 13 sibling of FC100A1029). Both fit the same cabinet — the MERV 13 has denser media and is the better default for households with allergies.
Generic equivalents
Because Honeywell F100 cabinets accept standard 4-inch sizes (16x20x4, 16x25x4, 20x20x4, 20x25x4), any aftermarket pleated 4-inch filter in those dimensions will fit. The cabinet seal is forgiving — Nordic Pure, FilterBuy, and Aerostar 4-inch filters all work. OEM Honeywell runs $40-50; aftermarket runs $25-35.
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