Everpure 2CB5S Cartridge EV961722Application: Office Coffee & Vending Carbon block media. Five micron particulate reduction with scale inhibitor. The 4CB5S is the upgrade cartridge if you are looking for more capacity. Both of these water filters can be used in place of any of our other water filters. Because of the universal design of the Everpure QL3 head, EV925914, you have the flexibility to try a wide range of water filters to suit your needs. Read more about the versatility of