Behind the loudspeaker grille, there is a metal mesh that protects the loudspeaker, if there is one installed. Volkswagen never installed speakers as standard, it was always an additional option. But the place where this loudspeaker was to be mounted was already prepared and carefully finished with a metal protective mesh placed behind it.
If you have chosen to install a clock in the grill, you will need this protective mesh in addition to the grid, although you should always make the recess for the clock itself. With the standard chrome grille, the mesh is included and therefore serves as a replacement.
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