Gravity Roof Vent

Models available are the aura gravity ventilators round back static vents keepa attic vents pop vent roof louvers roof exhaust version witches hat vents and universal vents.

Gravity roof vent.

Gravity roof ventilators brock offers two styles of gravity roof ventilators to help provide free air movement into the bin. Windows and doors at lower elevations provide the intake portals of the gravity ventilation system. Shop for a gravity roof vent from grainger in either hooded or low profile design. Gravity intake and relief ventilators for use in non powered applications.

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. A built in curb cap offers prepunched holes to help provide for easy attachment to the roof curb. A largely arbitrary rule of thumb that s been adopted into most building codes calls for 1 sq. Grs aluminum ventilators with curb cap designed to be used as an intake or relief unit on natural gravity or negative pressure systems.

Designed for maximum airflow passage and weathertight integrity bgh comes in either intake or relief models with aluminum or galvanized finishes. Use with mechanical systems. Low profile gravity roof vents feature corrosion resistant weather resistant rigid aluminum construction and include integral bird screens. Hvac and refrigeration roof ventilators gravity exhaust and supply ventilators.

How much air must be moved. Gravity intake and relief ventilators for use in non powered applications. Available with standard flashing or curb mount flashing the aura gravity. Of vented area for every 300 sq.

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. All roof vents are available with curb mount flanges and roof curbs if needed as well. Fabricated gravity relief intake ventilator. All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but only when the wind blows.

Elbow style vent the brock elbow style roof vent offers 190 square inches 1225 square centimeters of ventilation opening. Round mushroom style roof vent. Gravity vents are placed on the roof being the highest part of the structure to provide for exhaust of building air.