Active Ventilation 12 in. Black Powder Coated Aluminum Roof Vent No Moving Parts Wind Turbine

The Aura Gravity Roof Ventilator removes heat from the attic in the summer and in the winter. This allows for year-round ventilation. It functions like a spinning roof turbine but without any moving parts. Aura Gravity Ventilators rely on the Venturi Effect when wind blows against the outer louvers. As a result, this creates an upward draft allowing air to freely flow in and out of the vent. Even the smallest breeze can create exhaust ventilation so that air is drawn out of the gravity vent. This movement of air is proportional to the wind speed and is measured in cubic feet per minute (CFM). The Aura Gravity Ventilator also ventilates the roof through “The Stack Effect”. This is when hot air naturally rises out through the roof vents. The 12 inch Aura Gravity Ventilator is 12 inches in diameter and has a 2 inch tall collar. The model number is AV-12-C2 and has 113 inches of Net Free Area (NFA). All 12 inch gravity ventilators come with a standard 18″ x 18″ square flange. Gravity Vents removes hot air in the summer and moisture from the attic in the winter to provide ventilation for steep slope roofs.

• Inner vertical louvers keeps insects, birds and squirrels from entering the vent allowing optimal air flow and no maintenance
• Use on pitched roofs ranging between 3/12 and 12/12
• Round aerodynamic design can withstand harsh weather and wind forces of up to 200 mph
• Vent head is removable for easy installation
• Noiseless – does not require electricity to exhaust air from attics spaces
• Black powder coating finish is significantly greater at resisting scratching, chipping, and oxidation
• Helps to reduce energy costs
• 5-year warranty