Waterdrop Refrigerator Water Filter, Compatible with GE MSWF, 101820A, 101821B, 101821-B-Standard Waterdrop is Committed to Improving Water Filtration Technology and Offering Clean Water. NSF 42 CERTIFIED: Reduces chlorine, taste and odor to deliver clean water that tastes refreshing like mountain spring water NSF 372 CERTIFIED: Lead-free material gives total protection to you and your family FILTER LIFE: Enjoy 6 months or 300 gallons of clean, great-tasting water straight from your own fridge GOOD MATCH: Leak-proof technology allows for precise fit without water leaks EASY REPLACEMENT: Accurate and simple design makes installation easy without tools required COST-EFFECTIVE: Features the same great quality as original filter at a fraction of the price NO-WORRY GUARANTEE: 30-day unconditional money-back guarantee promises risk-free experience ECO-FRIENDLY PRACTICE: Uses renewable coconut shells as the raw material for a better world FOR DIFFERENT NEEDS: Waterdrop launched Standard, Advanced and Plus filters separately to address different water problems. You may choose the right one based on your water quality. REPLACEMENT MODEL: 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!