This filter is NSF 42 and NSF 372 certified and using 7-stage water filter technology to reduce chlorine, lead, arsenic, fluoride, taste and odor. (For detailed information, please refer to the performance data sheet in the instruction manual.) With a large 20-cup capacity, can satisfy different water needs. Still fits into most fridges, ensuring that more people can enjoy fresh and cool water. The smart LED light indicator reminds you to replace the filter. Services a life of 2 months or 200 gallons. Provides you with clean filtered water. The push-and-pull design allows you to obtain cleReduce most contaminants and improves the tastan water easily, the max water level line eliminates worries about leakage, and the anti-slip design promotes safety.