I designed this for bringing the hot air away from the cooling-unit of the fridge. You can attach a 75mm pipe on it.
To have more airflow i installed an 12V fan with 80x80mm. Depending of the length of the pipe you can change the power of the fan. I took one with 1,7 Watt.
Printed with PETG, it was to hot for PLA so it startet bending.
Kühlschrank_Lüfterführung.stl | 118.1KB |