GE MWF MWFP GWF 46-9991 Smartwater Refrigerator Water Filter Pitcher (3 Pack) COMPATIBLE-Compatible with GE MWF, GWF, GWFA, GWF01, GWF06, MWFA. Easy installation with clear instructions. USAGE-Six-month filter life: For best filtration results, filter cartridge should be replaced every six months or 300 gallons. Tested and certified by a non-governmental organization dedicated to public health, safety, and environmental protection. MATERIAL-High grade carbon block, that removes over 99% of numerous potentially harmful contaminants which may be present in your water. BENEFIT-Tastes great by leaving potentially healthy, beneficial minerals while removing chlorine, other chemicals and contaminants. GOOD FOR THE ENVIRONMENT 100% recyclable with renewable sourced coconut carbon filter media helps reduce contaminants with Eco-friendly materials and design 100% SATISFACTION GUARANTEED or FULL refund, Our professional customer service team will take good care of you.