Aura Gravity Ventilator | 12″ Diameter 4″ Tall Collar AV-12-C04
This is a premium exhaust vent, activated by even a small breeze to forcefully evacuate air using the Venturi effect. All Aura Vents, our signature product, use patented louver design to keep your home, office, or industrial property safe and comfortable. For a 12 inch diameter , 4″ above the base.
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Active Ventilation Products Aura Vent series has been tested and approved by the State of Florida
Shipping Dimensions for AV-12-C04
|Actual Package Weight||7 lbs|
|Dimensions||18 × 18 × 12 in|
|UPS Dimensional (Billable) Weight||28 lbs|
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Basic dimensions of the Aura Vent and it’s identifying attributes. Primary identifying dimensions of vents and fans are the inside diameter of the Head, which equals the diameter of the hole being vented, and the height of the Collar which is the solid tube between the Head of the vent and the Flange which attaches to the roof.
Louvers are the vertical openings in the vent, which facilitates the flow of air, while keeping animals, insects, debris, and embers out. The combination of inner and outer Louvers on our signature “Aura” series of vents and fans are shaped to create a positive vacuum effect which draws air out of the vent, utilizing a physical principle known as the Venturi effect.
Expected snow and rain in your region and the pitch of the roof are the key consideration when choosing the height of the collar of your roof vents. Zones 1 and 2 are not expected to sustain significant snow packs, while zones 3-7 are likely to experience snow, possibly for weeks or months. Vent collars under 4 inches are inappropriate for flat (0/12 pitch) roofs because even heavy rain can splash water into a shorter vent.
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Aura Roof Ventilator 12″ Diameter Aluminum Gravity Vent with a 4″ Collar Height and 18″ x 18″ Square Flange. The model AV-12-C4 has 113 square inches of Net Free Air Space. It is best used for flat roof applications up to 7/12 roof pitch without modification. Adaptable up to 12/12 roof pitch. This vent contains no moving parts The Venturi effect is stimulated by even small breezes and creates a positive movement of air out of the vent without the need of any part of the vent to move. This movement of air is proportional to the wind speed, and can be measured in Cubic Feet per Minute or Cubic Meters per Minute. At 11MPH wind speeds, this vent moves up to 310 cubic feet of air per minute. These vents are rated for up to 200 MPH winds by Texas Insurance. They are certified by UL as well as Florida Building Code, the toughest in the nation. Being constructed entirely out of aluminum makes our roof vents highly resistant to rust and corrosion. In addition, they are insured for up to 5 years.