This is the replacement cartridge for HammerHead inline shower head filters, filled with a blend of KDF 55 and calcium sulfite rather than a long list of marginal stages. It is rated for 10,000 gallons or about six months and keeps flow at 1.8 GPM across 40–120°F and 40–100 psi. It fits HammerHead models including ISH-100, ISH-200C, S-W100-C, S-H200-C, WSH-C125, HSH-C135 and RDSH-C115. Buyers who already run a HammerHead housing get a simple swap that restores chlorine and heavy-metal reduction; anyone without that housing needs the full filter unit instead.
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Lowest price we've seen: $29.99 on Nov 12 at Ortorex. Tracked across 1 store since Nov 12.
Rated 4.9 out of 5 from 1,394 ratings, and HammerHead's own survey of buyers reports most noticed better skin, hair or water quality, often within days. Owners describe an easy swap and a clear improvement over unfiltered water.
This is a replacement cartridge for the HammerHead Showers Inline Shower Head Filter. It uses a proprietary blend of KDF 55 and Calcium Sulfite filtration media to reduce chlorine and heavy metals in shower water. The size of both media is customized to maximize surface area without reducing shower pressure.
The cartridge body is made of ABS. It works in both hot and cold water, and swapping in a new cartridge restores filtration without complicated steps. The filtration has been third-party tested to reduce chlorine and heavy metals.
