Matrikx CTO filters are made using 100% coconut shell based activated carbon, a renewable and ecologically sustainable material. PFAS and Chloramine reduction are now standard in the CTO line, the result of a breakthrough in high performance catalytic carbon technology.
 
Activated Carbon Block filter for chlorine, taste and odor reduction.
Now with PFAS and Chloramine reduction
5 micron nominal filtration, reduces sand, rust and sediment
Excellent chemical contaminant reduction 

20" Whole House Filter System Replacement Filter Cartridge Suitable for all Big Blue or Big White 20″ x 4.5″ Filter housings.