The Mag Filter 1'' magnetic particle filter by Brass Form is ideal for removing oxides that form within the heating system. Proper water circulation is essential for the optimal operation of your boiler, and this filter ensures just that. Over time, the metal components of the system may wear out, leading to the formation of black iron oxides, which accumulate and hinder proper functioning. By installing the Mag Filter, you ensure the long-term health of your system.