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Tested to 100
5” x 20” Big Blue Filter Housings
Standpipes - stainless steel
Capacity** : 270
US Water Big Blue Calcite Replacement Cartridge 4.5" x 20" | USWF-4520-PH Replacement Filters Tested to 1004. 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
US$ 136.40
US$ 901.12
