I personally could not live without my roof vent. I live in my van full time with a dog and cat so for me it is a necessity. The roof vent allows me to control: humidity inside of the van, heat, cooking fumes, CO and CO2 from my little buddy heater. The roof vent also ensures that if I need to run into the store for a few things, I won’t come back to a boiling car (especially important for my animals).
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