In mesh grids of comparatively large dimensions, measures are taken to prevent that said grids which are mainly used in metal-ceramic tubes deform under the influence of their own weight at high temperature. A sufficient increase of the mechanical stability of the grid is obtained if said grid comprises a few thicker wires in addition to the thin wires.
A first array of spaced wires is in angular contact with a second array of spaced wires so as to from a wire mesh. The first array has a fewer number of wires than the second array.
