Watts Hydro-Safe® Cube Max-S3L Plus filtration System, four-stage (2) 3/8-inch NPT Lead Free brass ball valves, flush kit, polypropylene filter housing mounted on a powder-coated steel bracket, water pressure gauges, stage-one: (1) 10-inch 5-micron sediment filter for reducing sand, silt, sediment and rust, stage-two & three: coconut shell carbon block filters for reducing chlorine taste and odor, stage-four: OneFlow anti-scale media for scale control