Waterdrop NSF 53&42 Certified Refrigerator Water Filter, Compatible with GE MSWF, 101820A, 101821B, 101821-B, Advanced, Pack of 2 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. Waterdrop Plus is an independent brand. This filter is not an original product. NSF 53 certified to reduce: Benzene  96.6%, Carbofuran  98.4%, Lead  99.6%, Cyst  99.99%, Endrin -96.6% NSF 42 certified to reduce: Chlorine  97%, Taste &amp; Odor  97% NSF 372 certified for lead-free compliance *For NSF information: Certificate# C0145653 - 03, by NSF International, 2018