GE MWF Refrigerator Water Filter. GE guaranteed fit. Compatible with select GE side-by-side and bottom-freezer refrigerators. Premium filtration certified to reduce chlorine-resistant cysts, lead, select pharmaceuticals and 15 other contaminants. Simple, twist and lock design provides easy, tool-free, no-mess filter replacement. Six-month filter life. For best filtration results, filter cartridge should be replaced every six months or 300 gallons.