EXCELPURE RPWF Refrigerator Water Filter Compatible With GE RPWF (Not RPWFE), RWF1063, RWF3600A, WSG-4 (1) COMPATIBILITY Compatible W/ GE RPWF NSF CERTIFIEDNSF 42 Certified by WQA. EC1935/2004 Food Contacts Material Safety Certified by Regulation (EC) No 1935/2004 of the European Parliament. ADVANCED-TECHNSF Certified Premiumn Coconut Shell Carbon Block W/ 0.5 Micron Filtration Rate Filters Out The Most Chlorine, Cysts, Rust, Sediment, Odor and Turbidity. 90-DAYS LIMITED WARRANTYExcelPure 90-Days Limited Manufacturer Warranty Against Defects in Materials And Workmanship. Restrictions Apply; Please Contact Us For Details. DISCLAIMERPlease Be Aware That This is A Compatible Spare Part, The Manufacturer`s Names, Part Numbers Have Been Used For Compatibility Information ONLY.