The RV-US4 is designed specifically for the added removal of Chloramines, which are sometimes used instead of Chlorine to treat municipal tap water in certain areas.
This cartridge is a more economical version of the famous, high capacity US4-S-IL US4 under counter water cartridge.
The cartridge should be regularly back-washed (based on quality of source water) to ensure optimum performance and maximum service life.
