A magnetic grate consists of a series of magnetic tubes, which have poles alternating between one another and along their length. These units are used for granular free-flowing materials finer than 12 mm and are typically mounted at the discharge of a hopper. These are suitable for removal of fine iron and paramagnetic contamination. The magnetic bars emit high magnetic field across the gaps between them. As material flows into the top of the housing, it is forced to cascade in a zigzag pattern from row to row over the magnetic tubes, this ensures maximum tramp metal capture since the product comes in direct and repeated contact with a magnet as it travels through the housing. Housings are available for both square chutes and round pipelines and are flanged to suit requirement for ease of installation.