Grate MagnetsHigh-density permanent magnetic tubes are arranged in our grate magnets to draw iron particles into the magnetic field and hold them there as material flows through the grate. Grate Magnets are the best method of protection for crushing and grinding equipment. Most common style of grate magnets are  round or rectangular/square models. Both are constructed of stainless steel with one-inch diameter magnetic tubes placed to provide the greatest magnetic efficiency. Available in food grade and optional deflectors.