Tier1 Replacement for GE MWF SmartWater, MWFP, MWFA, GWF, GWFA, HWF, Kenmore 9991, 46-9991, 469991 Refrigerator Water Filter 4 Pack DESIGNED TO FIT: GE and Hotpoint refrigerators that use a round white plastic filter NSF 42 CERTIFIED: Each Tier1 refrigerator filter is tested and certified for materials and structural integrity requirements HIGH EFFICIENCY FILTRATION: Reduces Chlorine Taste & Odor, Rust and Corrosion, Sand Sediment, Silt, and Turbidity for 300 gallons or 6 months, depending on water usage and quality REPLACEMENT MODEL: This is a replacement comparable part to MWFP, MWFA, HWF, FXRT, MXRC, HXRT, FXRC, WF287, WSG-1, EFF-6013A, WF287, GERF-100, and SGF-G1 100% TIER1 NO WORRIES GUARANTEE: We stand behind the quality of filtration and overall performance of our Tier1 filters! Chlorine Taste and Odor Rust and Corrosion Sand Sediment Silt Turbidity