Abstract: A magnet holding structure comprising a magnet holder for holding a permanent magnet and a mounting frame formed integrally with a container such as a plastic basket for holding the magnet holder, the mounting frame including at least one pair of projecting walls having an engaging pawl on each of opposed inner surfaces thereof and the magnet holder having engaging projections corresponding to the engaging pawls, the interval of the engaging projections being slightly larger than the interval of the engaging pawls.