Replacement Filters for the APEC CB3-SED-KDF-CAB20-BB 3-Stage Whole-House System
APEC CB3-SED-KDF-CAB20-BB
✅ Best value — replace everything at once
IPW 3-cartridge set — every replaceable stage in one order
✓ Guaranteed to fit your APEC CB3-SED-KDF-CAB20-BB
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months · iron/KDF cartridge yearly
1
Pleated sediment
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
2
KDF-85 heavy metal
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
3
Sediment+carbon 2-in-1
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number on your cartridge, or by photo.
