Tier1 Replacement for Frigidaire WF1CB PureSource, WFCB, RG100, WF284, NGR2000, Kenmore 469906, 469910 Refrigerator Water Filter DESIGNED TO FIT: Frigidaire and Kenmore refrigerators made before April 2001. 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 WFCB, WF1CB, NGRG-2000, 46-9906, 46-9910, RG100, WF284, WF1CB-EFF, WSF-1, WSF-3, SGF-F2, WFCBEFF, and RC-101.. 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 Unscrew the filter cup and dump out the water Pull the old filter straight down and discard Place the new filter in the filter cup The end of the filter with the small o-ring should be up Screw the filter cup (with filter) up onto the housing The filter will self-align as the cup is tightened Reset your change filter light (if your fridge has one) Flush filter with 3-4 gallons of with water until water runs clear. Some noise is not uncommon as air is purged from the system.