RE: Out With The New, In With The Old School!
In summertime when outside temp cross 30 Celsius my ventilation system works almost on maximum to maintain 27 Celsius inside my box.
Do you have hot summers also?
If yes cut holes and direct airflow and you have no worries :)
For this summer I upgraded my with importing air from room cooled by AC.
Before I had computer fan and conduct pipe filled with dry ice for cold air supply
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