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 Twist and lock design: Simple design provides easy, tool-free, no-mess filter replacement.Max. Filtered Water Flow (gpm):0.5 Six-month filter life: For best filtration results, filter cartridge should be replaced every six months or 300 gallons GE's most advanced filtration Tested and verified to filter five trace pharmaceuticals, including ibuprofen, progesterone and others Replaces GWF, GWFA, GWF01, GWF06, MWFA Reduces 99% of lead from your drinking water Replaces GWF, GWFA, GWF01, GWF06, MWFA