NSF 53&42 Certifications: Unlike ordinary filter, this premium refrigerator water filter achieves three certifications by NSF International. NSF 53 Certified: Reduces health-related contaminants such as lead, cyst & VOCs; NSF 42 Certified: Reduces chlorine, taste & odor; NSF 372 Certified for lead free. Your every sip counts! 300 Gallons' Invigoration: More than thirst quenching with tasty water, our premium filter delivers 300 gallons of refreshing water, protecting you from contaminated water for about 6 months. Effortless Replacement: The replacement is a breeze. And our filter fits your fridge just like a glove! No more concern about water leaks and chattering noises.