27 lineal feet required.
Gravity roof vents residential.
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.
It is compatible with 3 or 4 ductwork and includes a 3 to 4 adapter for convenience.
The aura gravity ventilator works like a roof turbine but with no moving parts.
Intake gravity ventilators non powered ventilators work on pressure differential between the inside and outside of the building allowing the intake of fresh air.
The gravity intake and relief ventilators are non powered do not have a fan and work on pressure differential between the inside and outside of the building.
Even the smallest breeze can create exhaust ventilation so that air is drawn out of the gravity vent.
Use with mechanical systems.
Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier.
Designed for maximum airflow passage and weathertight integrity bgh comes in either intake or relief models with aluminum or galvanized finishes.
Aura gravity ventilators rely on the venturi effect the creation of an upward draft when wind blows against the outer louvers.
They both effectively remove radiant heat from the attic in the summer and water vapor from the attic in the winter.
An extensive range of sizes is offered with many standard and optional features.
Both function like roof turbines more static vents with or without curb mount flanges.
Engineered and certified for both flat roof ventilation and steep slope ventilation the aura gravity ventilator is available for both residential and commercial buildings.
Roof turbine s wear out lose their functionality.
The rvk1a steel roof cap kit is an the rvk1a steel roof cap kit is an easy to install vent for ventilation fans bath rec room home gym etc.
Bgh gravity ventilators offer a modern low silhouette design that blend with roof lines and other equipment.
Picture above shows both roof vents a rotary turbine vent on the left and an aura gravity ventilator on the right with curb mount flanges a roof turbine can be made of galvanized steel that rusts as shown above.
Choose one of the following products to meet the recommended exhaust nfva of 528 square inches.
Ul listed this gravity roof vent is rated to withstand wind pressures of over 50 psf which is equivalent to wind speeds exceeding 200 mph.
Ventsure 4 foot strip heat moisture ridge vent.
Commercial gravity roof exhaust aura ventilators function much like their residential roof vent version.
All aura gravity ventilators are made of rust free aluminum.
