The Microline Clack S-7028 filter cartridge contains carbon block media as a prefilter in your reverse osmosis (RO) system. It reduces unpleasant taste and odor issues, as well as other chemical contaminants, prior to the RO membrane. It also makes for cleaner water by filtering dirt and sediment to the 5 micron level.
 
Manufacture Part #S7028
Comparable with Part #s
RS-21CB5
RS-21-CB5
33208
 
Used in
 
Clack, Microline, Pentek