5 Micron Rating For use in W quart4RO11-50 RO System Replace annually Package weight: 0.65lbs Watts WQTSC-10 QT Quick Twist Sediment Prefilter. Watts WQTSC-10 QT Quick Twist Sediment Prefilter The is the replacement filter used in the Watts WQT4RO11-50 Quick Twist RO System. Changing the WQTSC-10 requires no tools making filter changes quicker and easier than ever. Quick Twist cartridge for easy filter replacement Micron Rating: 5 m For use in WQT4RO11-50 RO System Replace annually Watts WQT4RO11-50 Quick Twist RO System 50 gpdSpecifications Watts WQT4RO11-50 Quick Twist RO System 50 gpd Manual Watts WQT4RO11-50 Quick Twist RO System