Compatible with moststandard water softeners including Harvey, Kinetico, Crown, Monarch, TwinTec, and Minimax models. ✔ Harvey, Kinetico, Crown, Monarch, TwinTec, Minimax (standard models). (Note: Not suitable for HarveyArc, Minimax Innova, or TwinTec Cobalt models – these require Mini Curve Salt Blocks.).
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