Roof vents and ventilators are used to ventilate the attic or crawlspace of a building, circulating air for cooling, and moisture mitigation. More elaborate HVAC systems can use roof vents to ...

Purchase the exhaust fan (if you don't already have one) and a roof vent. Roof vents can be dome-shaped, square (like the one ...

If this sounds like an unlikely scenario, consider the fact that you might already have these openings — let's call them ...