A small guide to a better fitThe right filter.
The right filter.
Without the
size guesswork.
Start with your cabinet model or the part number on your old filter. Get a sourced replacement reference you can keep.
Currently covering three Honeywell Home F100 cabinets.
Find your filter
Look for the model label on the air-cleaner cabinet, or the printed part number on the filter frame.
Full model numbers only. A size such as 16 × 25 is not enough to establish compatibility.
Three cabinets. Three passports.
4, 4.4 or 5 inches?
A size label isn't a fit guarantee.
A replacement can have a different size label from the original. Match the exact part or cabinet first, then compare the dimensions of the specific product.
Understand the size difference →Keep the answer for next time.
Each replacement page includes a printable passport with your cabinet, original part and source. Save it with your household records.