Tier1 Replacement for GE RPWF Refrigerator Water Filter (NOT for RPWFE) 2 Pack DESIGNED TO FIT: Refrigerator models that require the GE RPWF, NOT with a chip recognition and will nto work with refrigerators needing RPWFE. 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 GE RPWF & WaterSentinel WSG-4, PYE23KSD, GNE26GSD, GFE29HSD, and PWE23KSD. 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 Remove old cartridge by gently lifting the filter away from housing until first release, and then lift again to remove. Align top of filter with cartridge holder and push until cartridge is fully seated. While continuing to ensure cartridge is fully seated in the holder, gently rotate the filter (inward for BF models and downward for SxS models) until it can no longer rotate. Run water from the dispenser (approximately 2 gallons or about 5 minutes) to clear any particles and remove air from the system.