The Everpure EV910545 is the correct replacement filter for the following systems:
The Everpure SO-204 20" Water Softening Filter is a replacement water filter cartridge for use with the Everpure EV9100-94 SO-24 Softening System. This SO-204 water softening cartridge reduces the buildup of limescale and corrosion within boiler tanks, heating elements, impeller, and steam arm, and has a 20" large capacity. The Everpure Costguard softening filter can specifically be used in commercial espresso, specialty coffee, and tea machines to increase equipment life and reduce calcium and magnesium buildup.
Everpure SO-204 20" Water Softening Filter specifications: