ALTON brand water filters. Combo Pack of 2 carbon filters and 1 RO membrane filter. Replacing GE part # FX12P and FX12M Replacement filters for GE GXRM10RBL RO water systems. Commercial grade extended filter life 2000 gallons or 12 months. Coconut shell activated carbon block filters. BPA free, 2.75" x 9.75". Removes sediment, chlorine, taste, odor, THM, VOCs, Pesticide, Herbicide, turbidity. Meets ISO 9001:2000 standard, NSF Standard 42. RO Membrane filter is 24 gallons per day NSF certified same as the GE RO system GXRM10RBL