GE SmartWater MSWF Slim Refrigerator Ice & Water Filter. 

This water filter cartridge reduces lead, chlorine, mercury, turbidity, cysts, and some herbicides and pesticides, without removing fluoride. It improves the taste and odour of your water and ice. The GE WG03F00835 SmartWater MWF Ice and Water Filtration System is tested and certified by NSF International to meet or exceed NSF/ANSI Standards 42 and 53.