Replacement (10"x4.5") 1µm Carbon Block Chloramines Filter

10" x 4.5" Replacement filter cartridges only
Contains 1 filter cartridge:
Final Cartridge (3 or 4): Special advanced carbon Chloramine reducing 1 Micron filter cartridge

PLEASE NOTE THIS IS THE FILTER REPLACEMENT FOR FILTER 3 (of a triple system) or FILTER 4 (of a quad system). WE RECOMMEND YOU CHANGE THIS FILTER EVERY 12-24 MONTHS DEPENDING ON USAGE OR PRESSURE GAUGE INDICATION. YOU SHOULD ALSO CHANGE THE OTHER FILTERS AT THE SAME TIME.