Catalytic Carbon Cartridge 10" SystemUpgrades Kits AddOn's Our array of high flow Parts:Bracket:QUAD ALUMINUM Our array of high flow rate filters directly results in higher purity water as your RO membranes receive more line pressure than lower flow rate or lower micron size filters ✔ Easy Filter Changes Our mighty mite systems have WQA certified filter arrays that makes it incredibly easy to change filters Catalytic Carbon Cartridges: We have filled our (re fillable style) media housing with Centaur Catalytic carbon from Calgon It's important to note that lots of sellers of "expensive" filters out there claim that carbon blocks are the best way to go for point of use