These genuine Lincat FilterFlow replacement cartridges guarantee premium quality water filtration with every use. By innovative filtration and clever design, water is left contaminant-free and crystal clear, helping you to serve tea as it's supposed to taste.The typical lifespan of genuine Lincat FilterFlow water filters is around 5,600 litres - that's around 4-6 months of use, although heavy use may require more regular changing.Please note: this filter is for the FX series water boilers. If you have an older style (pre-September 2016) Lincat F series water boiler, please order filter AC758. Product Features: Capacity 5600ltr Weight 500g Lasts around 6 months or 5,600 litres Ensures premium water quality and reduced limescale build-up As easy to change as a light bulb WRAS approved product For use with CS570, CS571, CS572, CS573, CS574 & CS575 Lincat Water Boilers