Round Back Static Roof Vent | 8″ Diameter 2″ Tall Collar | 50 Sq. In. NFA | Model RBV-8-C2


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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.


8 inch Roof Vent | Round Back Static Roof Vent | Model RBV-8-C2

The 8 inch Round Back Static Roof Vent is 8 inches in diameter and has a 2 inch tall collar. In other words, this vent has 2 inches of clearance between the base and the inner louvers. The model RBV-8-C2 has 50 inches of net free area (NFA) which means each vent will ventilate 208 square feet of attic space.

To determine the number of roof vents you may need, see our Vent Calculator. Each 8 inch static vent comes with a 13” x 13” square flange.

Where to install:

This 8 inch roof vent is ideal for roofs with a 3/12 to 12/12 roof pitch. For a pitch of 3/12 or greater, install this vent no more than 3 feet from the ridge of the roof. Doing this will enable you to install your static vent in climate zones 1-5.

However, if installations are 18 inches or less from the ridge of the roof, this vent is suitable for all climate zones.

How it Operates:

The Round Back Static Roof Vents will remove radiant heat in the summer from the attic. It will also remove moisture from the attic in the winter. As a result, making these the ultimate solution for ventilating residential attics year-round. Ventilation helps to make a home more comfortable and energy efficient.

The vent lid is manufactured from one piece of spun aluminum which prevents rain and snow from entering the attic. The round design is aerodynamic to withstand wind pressure exceeding 200 mph. All Round Back roof vents are resistant to corrosion and will remain rust free for the life of the roof.

The inner louvers of the roof vent keep insects and animals from entering the attic. The louvers also allow the air to flow freely to the outside.

This 8 inch roof vent is also great for residential roof applications because of its aesthetically pleasing appearance. Having a low profile, the Round Back Vents can also be painted to match the color of asphalt shingle roofs.

For any questions please see the frequently asked questions page. If you still have questions, email the sales team at [email protected] or call 845-565-7770

AVP’s Round Back Static Vents are UL Listed and rated up to 50+ PSF or wind pressure above 200 MPH.  Certified by Texas Department of InsuranceFlorida State Approved & Conforms to the Standards of CALFIRE.

In addition, if you are looking to ventilate a duct, please see the Round Back Roof Jack for vents with a tailpipe adapter. AVP also offers Static Vents with curb mount flanges to go on roof curbs.

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Click below to see or download full Installation Instructions for this product

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Calculate number of Model RBV-8-C2 Vents Needed for a Given Area

Enter the Width and Length of the attic space you need to ventilate to calculate the area. You may also enter the area directly in the "Area" field. It is not necessary to hit the Return or Enter key (which will refresh this page), just enter numbers in the fields.

Enter width of space to calculate area (or enter Area below)

Enter width of space to calculate area (or enter Area below)

If you know it, you may enter the area directly here

The diameter size of all roof vents determines the Net Free Area, also known as the "NFA". NFA is the measured amount of opening each vent offers at each specific size. to be available for venting air through a specific vent size. The calculator below will find the overall number of vents needed to effectively ventilate the targeted attic space.

Once you have the area, the numbers shown below are the number of vents of that size which would ventilate the specified area with both 1/300 and 1/150 rule.

Results Appear Here

*Please note
The roof vent calculation values shown above are for the exhaust portion of the roof. The same amount of net free air inches is needed for air intake as well. Proper roof ventilation consists of 50% air exhaust and 50% air intake.

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Our products can be painted with a durable baked-on powder coating surface finish.
Click in a color square to choose a paint color.
Click "Premium Colors" to see the full set of color options.

Brand: Active VentilationUPC(GTIN): 843951008707 SKU: RBV-8-C2 Category:
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