Replacement Filters for the Express Water WH300SCKS 3-Stage Whole-House System

Express Water WH300SCKS

Express Water WH300SCKS

Express Water · 3-stage · 20×4.5 Big Blue

✅ Best value — replace everything at once
IPW 3-cartridge set — every replaceable stage in one order
🛒 Add the complete set — $203.51
✓ Guaranteed to fit your Express Water WH300SCKS
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months · iron/KDF cartridge yearly
1
Sediment
20×4.5 Big Blue
✓ IPW
IPW : SC45-20005 — Sediment
$19.99
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Replaces OEM FLTWH2045S
2
KDF/heavy metal (catalytic carbon+CuZn)
20×4.5 Big Blue
✓ IPW
IPW IF-SM-KDF020B — KDF/heavy metal (catalytic carbon+CuZn)
$149.52
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Replaces OEM FLTWH2045K
3
Activated carbon block
20×4.5 Big Blue
✓ IPW
IPW (1) HQCBC-20BB-5 — Activated carbon block
$34.00
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Replaces OEM FLTWH2045C

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