OMNIPURE EFS4 QUAD ESPRESSO MACHINE WATER FILTER This system uses the proven performance of softening resin to remove scaling minerals. The disposable resin cartridges are easily replaced by your personnel. The "Twist-Off" filter body makes cartridge changes fast and sanitary. The dual media cartridge also contains carbon to remove chlorine, off-taste & odor. Minimal interruption of espresso machine function and service to the consumer. Eliminates messy salt regeneration. Ensures consistent beverage quality. Maximizes espresso machine earning potential. Greatly reduces operator and downtime expense. ESPRESSO WATER FILTER KIT INCLUDES: This is a complete kit fully assembled. Full head and bracket assembly. 3 Omnipure QWS 850 grain softener resin cartridges. 1 Omnipure QCWS 1000 gallon taste, odor, and chlorine. Plus 600 grain softener resin in cartridge. 3/8" FPT inlet/outlet valve. Total grains of 3,150. Bypass valve. 6 feet of 3/8" tubing . Hard water test strip. Fully assembled. SKU 101307, Hh EFS4

The replacement filters for the EFS4 is QCWS, & QWS