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A four-cartridge refill bundle for dual-stage shower filtration: two 20-stage cartridges and two vitamin C/E/A cartridges. The 20-stage units combine KDF 55, activated carbon and calcium sulfite to reduce chlorine, chloramine, heavy metals and sediment, and work in hot or cold water. The vitamin cartridges add a second chlorine and chloramine layer and deplete faster, so the bundle covers roughly 8 to 12 months of dual-filter use. It suits owners of a compatible two-cartridge shower filter who want to restock both types at once rather than reorder the vitamin cartridge separately every month or so.
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Lowest price we've seen: $29.99 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
This bundle includes two 20-stage replacement cartridges and two vitamin C/E/A cartridges. Together they cover about 8 to 12 months of dual-filter use, depending on water quality and usage.
Each 20-stage cartridge combines KDF 55, activated carbon, and calcium sulfite. It helps reduce chlorine, chloramine, heavy metals, and sediment, and it works in both hot and cold water. The vitamin cartridge uses vitamin C (ascorbic acid) to target chlorine and chloramine, adding a second layer of filtration.
No tools are needed to replace them. Open the existing filter housing, take out the old cartridge, and drop in the new one.
