"If you put a vent in a sealed box, the purpose is defeated." please explain, thx
Vent by definition means a way or passage for a gas or liquid.
The free dictionary says (meaning of vent)
1. Forceful expression or release of pent-up thoughts or feelings: give vent to one's anger.
2. An opening permitting the escape of fumes, a liquid, a gas, or steam.
3. The small hole at the breech of a gun through which the charge is ignited.
4. Zoology The excretory opening of the digestive tract in animals such as birds, reptiles, amphibians, and fish.
5. Geology
a. The opening of a volcano in the earth's crust.
b. An opening on the ocean floor that emits hot water and dissolved minerals.
I mean that a sealed box cannot have an opening. That is oxymoron (like deafening silence).
You seal a box so that nothing can escape. But then you want a vent?
But you can have a seal that leaks.