8-Pack Replacement PurePro G-107MR Polypropylene Sediment Filter - Universal 10-inch 5-Micron Cartridge for PurePro G-Series 7 Stage RO System by CFS 8-Pack Replacement PurePro G-107MR Polypropylene Sediment Filter - Universal 10-inch 5-Micron Cartridge for PurePro G-Series 7 Stage RO System 8-Pack Replacement PurePro G-107MR Polypropylene Sediment Filter - Universal 10-inch 5-Micron Cartridge for PurePro G-Series 7 Stage RO System High efficiency and high dirt holding capacity for longer filtration and fewer replacements. Sediment filter works well together with a carbon block filter or granular carbon filter to get the best water quality.