Ventilation Grille / Air Grid

thingiverse

In recent years I had to replace the filters in the automatic room ventilation several times, because the birds (exspecially coal and blue tits) like the filter material to build their nests and just "steal" it from the ventilation outlet (actually in the picture without grill you can still see a frazzle hanging) In order to stop them from doing so I created this grille, which can be mounted without any tools. Just snap it into the oval wholes the three clamps should hold it (I have mine mounted since some months now) printed in "transparent" PLA or PETG, it actually looks like it is made from the same metal as the outlet cover :-)