Watts (1R-1Y) Kwik-Change WQC4RO11 Bi-Annual Replacement Filter Kit Max Adaptor (65-2001) Brass 3/8" C X 3/8" C X 1/4" FIP (No Adapter) Not compatible with older 2500

Not compatible with older 2500 valves manufactured before 1995 or Fleck 5600/5800 series valves

Twist the old Q5540 filter counter-clockwise to disconnect from the head

188" double flat drive

Remove cartridge and rinse thoroughly with water to remove accumulated sediment

Watts (1R-1Y) Kwik-Change WQC4RO11 Bi-Annual Replacement Filter Kit Max Adaptor (65-2001) Brass 3/8" C X 3/8" C X 1/4" FIP (No Adapter) Not compatible with older 2500Watts Kwik Change Replacement Filter Kit Watts (1R 1Y) WQC4RO11 Bi Annual Replacement Filter Kit Six month sediment and carbon block replacement set for Watts Kwik Change reverse osmosis and whole house systems Tool Free Quarter Turn Installation Dual O Ring Leak Prevention Automatic Shut Off Valves 6 Month Service Cycle This Watts bi annual replacement kit pairs the WQCSC11 sediment filter (5 micron) with the WQCCC11 carbon block filter (10 micron)