The 3/4" Ultra Mag 9000 Gauss magnetic filter is designed to effectively remove oxides from water, ensuring the proper operation of the boiler. Its use is essential for any system that uses water to transfer thermal load, because over time, water can corrode the metal components of the system, leading to the formation of black iron oxides that block circulation. By installing this filter, you can maintain the efficiency of your heating or cooling system, extending the lifespan of its components.