Instead the box vent is installed over a hole cut out of the roof.
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These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic.
By understanding the basic form and function of each type of vent you can better choose the system that will ultimately provide your home with the most efficient level of ventilation possible.
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Turtle vents also known as louvers are box like vents that are installed as close to the ridge as possible.
As air comes in through the soffit vents the warmest air will rise up to the ridge.
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They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit.
Find out which type of roof ventilation system works best for your home.
Types of roofing attic ventilations.
It uses the process of natural convection so that hot air and moisture can escape into the surrounding air.
The box vent is also known as a static vent because it has no moving parts.