Gravity Roof Vent

Designed for maximum airflow passage and weathertight integrity bgh comes in either intake or relief models with aluminum or galvanized finishes.

Gravity roof vent.

Elbow style vent the brock elbow style roof vent offers 190 square inches 1225 square centimeters of ventilation opening. Heat stress 9820 air circulators 6249 ventilators 4993 blowers 3369 exhaust fans 2503 exhaust vents 16 roof vents 14 gravity vents 14 supply vents 14 related products. Gravity roof ventilators brock offers two styles of gravity roof ventilators to help provide free air movement into the bin. 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.

Grs aluminum ventilators with curb cap designed to be used as an intake or relief unit on natural gravity or negative pressure systems. Use with mechanical systems. Bgh gravity ventilators offer a modern low silhouette design that blend with roof lines and other equipment. Available with standard flashing or curb mount flashing the aura gravity.

All roof vents are available with curb mount flanges and roof curbs if needed as well. Round mushroom style roof vent. Fabricated gravity relief intake ventilator. A built in curb cap offers prepunched holes to help provide for easy attachment to the roof curb.

How much air must be moved. 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. 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.

Of vented area for every 300 sq. Gravity intake and relief ventilators for use in non powered applications. Low profile gravity roof vents feature corrosion resistant weather resistant rigid aluminum construction and include integral bird screens. 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.

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. Gravity vents are placed on the roof being the highest part of the structure to provide for exhaust of building air. Hvac and refrigeration roof ventilators gravity exhaust and supply ventilators.