Ventilation System
A sump pump is important to drain unwanted water from underground, just as important as a sump pump, another important underground installation is an air ventilation system. Without fresh clean air, nobody would comfortably survive underground, hence Wayne installed two 12-inch vents, both in front and in the back vicinity of the container. This is a clear indication that Wayne had planned to spend quality time underground. And for what practical reason maybe?
Ventilation System
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