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The Everpure Costguard SO20 / WS20 # DEV910843 / EV910843 Reduces hardness that can cause mineral build-up. Aslo sold as the Newer EV910542 20 in. 2 GPM Cartridge for WS-20 / Everpure EV910542 20 in. 2 GPM Cartridge for WS-20

Reduces calcium and magnesium.

May be used on water with up to 30 grains hardness per gal at flow rates up to 0.75 gpm.

Fits standard 20" bowl housings.

Capacity: 1,500 Grains

Flow Rate:

Certifications:

Pack Size: 1 and or Varies