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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
Includes one sensor probe
Fits backwashing filters using the 1" Clack Valve
Designed with 110 mm openings for easy access and convenient filling
Tested to 100
5” x 20” Big Blue Filter Housings
US Water Big Blue Calcite Replacement Cartridge 4.5" x 20" | USWF-4520-PH Replacement Filters Includes one sensor probe4. 5" x 20" Calcite cartridge is used to neutralize acidic water (raising the pH), reducing the leaching of metal plumbing components, and for use post RO to raise TDS, in case the plumbing is copper and leaching of the copper is an issue. Capacity: 24,000 Gallons Flow Rate: Up to 4. 0 GPM
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