Replacement Filters for the Membrane Solutions 3-Stage 20" Big Blue Whole-House System
Membrane Solutions 3-Stage 20" Big Blue
✅ Best value — replace everything at once
IPW 3-cartridge set — every replaceable stage in one order
✓ Guaranteed to fit your Membrane Solutions 3-Stage 20" Big Blue
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months
1
PP/string-wound sediment 5 micron
20×4.5 Big Blue
2
GAC granular carbon
20×4.5 Big Blue
3
CTO carbon block 5 micron
20×4.5 Big Blue
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