Search·Pentek
Use this page to see which whole-home systems use this cartridge, review any notes we have, and open buying links once the fit looks right for your housing.
Brand
Pentek
This cartridge number is linked to the whole-house systems below in our reference. Confirm your model or housing appears here, then compare dimensions and rating with what you have installed.
RFFE20-BB
Pentek iron reduction cartridge
Replace about every 12 months
RFFE20-BB matches models linked on this page. A BuckParts Verified Link appears only when our checks clear for this part number—not every filter has one.
Why this fits
- 2 compatible models on file for this part number
- Notes available
- When a BuckParts Verified Link appears below, we checked that retailer product page against this part number. Compare it with your old filter before ordering.
Model lists here reflect what we have on file for this part number—not every unit ever sold.
BuckParts Verified Links
A place to buy that BuckParts has checked against the part, listing, and evidence we trust. Not every filter page has one—we only show a link when our checks clear for this part number.
Shown as a BuckParts Verified Link after we checked the product page against this filter number (2026-04-25).
Fits these models (2)
Notes & next steps
Search again if you need a different model or part number.
20 x 4.5 in. Big Blue iron reduction media. Fits standard BB20 housings.