The Aqua Flo 41407001 is a 5 micron quick change sediment filter to replace the first stage of the QCRO and QCUF RO system. As the first stage of the RO system, the 41407001 sediment filter is the first line of defense in cleaning your water by reducing sediment, dirt, rust, and more to protect the carbon filters and RO membrane of the later stages. Featuring a quick connect twist and lock design, the sediment filter is easy to change making service a snap. To keep your system in top shape, change the Aqua Flo 41407001 every 6 months.