Franke Frx02 Triflow Chlorine Filter Cartridge.Under sink Water Filtration Replacement Filter for FRC Canisters. Franke four-stage filters combine multiple technologies to remove contaminants in the water, to deliver up to 600 gallons of fresh drinking water straight from the filtration faucet. NSF53 and NSF42 certified. REDUCES: Chlorine (taste and odor); Particulate and turbidity; Cysts (Cryptosporidium)