Refrigerator Vent Holder

This thing is a vent holder to cool the refrigerator cooling fins. I can save power with this thing. For 120mm-Vent, screw distance is 105mm. The vent is driven by mikrocontrolled automatic who is starting the vent when the coling fins get warm.I have add different dimensions because my build plate have only 200mm wide and 150mm height. The parts can fix with 5mm screws to get a 50cm-Tool and put it onto the refrigerator top and fix it on the wall with two screws. At high Units you can cut out s