[Replacement Model] GE Smart Water MWF, MWFP, MWFA, MWFAP, MWFINT, GWF, GWF01, GWFA, GWF06, HWF, HWFA, FMG-1, FMG, WR02X11020 WR02X11287, WR02X11290, WR2M3552, WR97X1 Models 9991, 469991, 46-9991, 9996, 469996, 46-9996, 9905, 469905, 46-9905 etc. [Twist Cap Design] Saves you the cost and inconvenience associated with purchasing bottled water from the store or having bottled water delivered to your door. [Filter Life] For a The GE refrigerator water filter ensures optimal filtration. It should be replaced every 6 months. [NSF CERTIFIED]: NSF 42 certified for contaminant reduction (chlorine, taste, and odor); NSF 53 certified for contaminant reduction (cysts, lead, benzene, endrin, carbofuran) [ENVIRONMENTALLY FRIENDLY] Renewable activated carbon filter media made from coconut. No mess or water flow interference. Guaranteed compatibility. The dimensional error is less than 0.1 mm, a durable, high-performance sealing ring that ensures a tight fit, no play, and no leakage.