They let moisture and hot air exit the attic but they aren t nearly as effective as other types of roof vents and homes generally need to have several of these units for the best results.
Linear roof vents.
Rectangular white uv resistant aluminum soffit vent sold in a carton of 50 only.
Air vent 2 6 in.
It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters connectors or end plugs needed.
Unlike box vents which are square off ridge vents are usually much longer and thinner.
When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic.
These vents are static vents that are placed over holes in the roof close to the roof ridge.