20" 5 mic. Activated Carbon Block. 
2.5 GPM HFR (High Flow Rate) carbon block filters allow your membrane(s) to get ideal pressure for better rejection rates... better membrane rejection rates = longer DI resin life.
20" 5 micron Carbon block
Illustrations/Diagrams/Instructions How to Change Filters
      
    
              
          
          
          
          
          
          
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