Global Water - ETCF - Carbon Block Twist filter SP320-HO Direct replacement for Cuno CS-521

Direct replacement for Cuno CS-521 and CS-721 systems with dual-action filtration and scale inhibition

Filter Type Oil Reduction / Sediment

5" filter housing including whole house systems and specialty DI vessels

Built for high-demand installations with extended filter life

non-toxic materials

Global Water - ETCF - Carbon Block Twist filter SP320-HO Direct replacement for Cuno CS-521Global Water Replacement Filter ETCF Carbon Block Twist Filter Tool free carbon block filtration for G3RO, G4RO, and G5RO bottleless water coolers. Twist in, twist out, done in seconds. Carbon Block 1 Micron Twist Lock WHY IT WORKS Effective carbon filtration without the hassle Easy Twist Installation No tools, no plumber, no downtime. Quarter turn design locks the filter into place on all compatible Global Water coolers in seconds. 1 Micron Carbon