It Replaces the RPWF and is designed to provide you with GE's most advanced filtration ever. Activated Carbon Block filter media gets to work on reducing the asbestos, cysts, lead, mercury, chlorine taste, and odor that plague your drinking water. In addition, this product has been engineered to reduce up to 98% of 5 trace pharmaceuticals that could be present in your water right now: Ibuprofen, Progesterone, Atenolol, Trimethoprim, and Fluoxetine. Made by GE specifically for select GE French-door refrigerators with easy, tool-free installation and 6-month filter life.