Aura Gravity Ventilator | 18″ Diameter 8″ Tall Collar | 254 Sq. In. NFA | Model AV-18-C8

$181.00

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Florida Approval by the Department of Business and Professional Regulation
CERTIFIED-UL Logo

This product has UL Certification. Check out other details and specifics on UL Product IQ™ (Note: UL now requires you to have a free account to access this page) UL’s Online Certifications Directory.

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This Aura Gravity Exhaust Ventilator has an 18 inch in diameter opening to the attic or plenum. It also has an 8 inch tall collar that provides an 8 inch clearance between the roof and the louvers. Model number AV-18-C08 has 254 inches of net free area (NFA) and comes with a 24″ x 24″ square shaped flange.

Aura Gravity Ventilators of size 18 inch are considered commercial sized roof vents. For those who are looking to ventilate their residential home, are encouraged to view roof vents that are smaller in diameter. Typically vents that are 14 inch, 12 inch, 10 inch and 8 inch in diameter are commonly used for attic ventilation.

When exhaust vents have an 8 inch tall collar or greater, they are typically used for flat or low slope roofs. Exhaust gravity vents work best when installed on the upper portion of the low slope roof since warm air rises. The Aura Gravity Vent can go on a 0/12 to 5/12 pitch roof for zones 1 through 6. For roofs that are pitched at 6/12 or greater, please notify the sales department when ordering your roof vents. All Aura Vents can be modified to operate properly up to a 12/12 pitch, even though it would not be recommend putting such a tall exhaust vent on such a pitch.

The Aura Gravity Ventilator works like a roof turbine but with no moving parts.

Aura Gravity ventilators rely on the Venturi Effect (the creation of an upward draft) when wind blows against the outer louvers.

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). Wind speeds of 11 mph for a 18 inch Aura Gravity Ventilator, produces 634 cfm of air exhaust for attic ventilation.

Aura Gravity Vents are UL Listed and rated up to 50+ PSF or wind pressure above 200 MPH.  Certified by Texas Department of Insurance, Florida State Approved & Conforms to the Standards of CALFIRE.

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Aura Gravity Roof Ventilator - Technical Drawing Downloads

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AV-18-C8dwg file icon - click to download CAD (dwg) fileunmarked drawingpdf file icon - click to download pdf filedwg file icon - click to download CAD (dwg) fileWith Measurements drawingpdf file icon - click to download pdf filedwg file icon - click to download CAD (dwg) fileCut Away and Measurements drawingpdf file icon - click to download pdf file

Aura Roof Vent - Installation Instructions

Product LinkInstallation Instructions - Shingled Roof - pdfInstallation Instructions- Flat Roof - pdf
AV-18-C8N/AInstallation Instructionpdf file icon - click to download pdf file

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Base Price (Before options):

$181.00












Model AV-18-C8 Category:
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