Waterdrop NSF 53&42 Certified Refrigerator Water Filter, Compatible with GE MSWF, 101820A, 101821B, 101821-B, Advanced , Pack of 3 Waterdrop is Committed to Improving Water Filtration Technology and Offering Clean Water. NSF 53 CERTIFIED: Reduces specific health-related contaminants for cleaner water: 99.6% of Lead, 99.99% of Cyst, 96.6% of Benzene, 98.4% of Carbofuran, 96.6% of Endrin NSF 42 CERTIFIED: Reduces 97% of Chlorine, taste and odor for great-tasting water that stimulates your palate NSF 372 CERTIFIED: Made of lead-free material for worry-free drinking experience FILTER LIFE: Designed to provide up to 6 months or 300 gallons of refreshing water LEAK-FREE FIT: Precision engineered for perfect fit without water leaks TWIST AND LOCK DESIGN: Simple design for easy, tool-free, no-mess filter replacement RISK-FREE GUARANTEE: Professional customer service team stands by for your any question in a timely manner ECO-FRIENDLY MATERIAL: Made from renewable Activated Coconut Carbon Filter Media for a sustainable world REPLACEMENT MODELS: GE MSWF, 101820/A, 101820A, 101821-B, 101821B. 238C2334P003, AP3997949, MSWF3PK, MSWFDS, PC46783, PS1559689, WR02X12345, WR02X12801. ICEPURE RFC1500A, Tier1 RWF1062, Crystala CF12, Pureza PF12, This filter is not sourced by or sponsored by GE. **NoteGE MSWF! Please double check if you need is MSWF!