Better you write it once more in English instead of using this 'bloody' altavista computer translation.
Don't understand what the computer says to us in German
Do you mean you want to know a proper mesh size of a filter for an open filter, to avoid that the MAF is damaged by product going into the MAF and damaging the glowing wire?
Just read that it automatically is heated up to 1000 degree C when engine is stopped, so burn and clean all dirt/dust from the mesh.