Universal Dormer Vent | 45 sq. in. Net Free Area | Model UV-45

$25.00

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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.

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Universal Dormer Vent | UV-45

The Universal Dormer Vent is an off ridge vent that can be used as an exhaust or intake vent. To clarify, an off ridge vent is a UV-resistant static vent suitable for installation on sloped roofs or parapet walls. This model is the UV-45 which is 39 inches long with 45 inches of Net Free Area (NFA).

Installation:

This vent is capable for installation on roofs with a pitch of 3/12 or greater. If installed on the upper portion of the roof, this vent can be used as an exhaust vent because it's engineered to allow heat and moisture to escape. However, when placed on the lower end of a pitched roof it can be used as an air intake vent similarly to a soffit vent. This off ridge roof vent is also excellent for ventilating parapet walls because it will allow the buildup of heat and moisture within the wall to escape.

Email us at [email protected] or call at 1-800-ROOFVENT for any questions. If you are looking to determine the pitch of your roof, see the Roof Pitch Diagram.

For any questions please email us at [email protected] or give us a call at 1-800-ROOFVENT. If you are looking to determine the pitch of your roof, see the Roof Pitch Diagram.

How it works:

This dormer vent is ideal for proper attic ventilation. The 1/8 inch opening between the horizontal louvers blades will keep out precipitation and wildlife while allowing air to move freely. In addition to its functionality, it has a low profile design that looks pleasing on shingled roofs and parapet walls. The hooded vent design and horizontal louvers will keep out rain and snow. Powder coating is available to match the color of your roof.

Proper attic ventilation helps to keep insulation dry in the winter while reducing energy costs.

Universal Dormer 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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Universal Dormer Vents - Technical Drawing Downloads

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Drawing pdf
UV-45dwg file icon - click to download CAD (dwg) filepdf file icon - click to download pdf file

Universal Vent (Dormer Vent) Installation Instructions

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UV-45Installation Instructionpdf file icon - click to download pdf file

Calculate number of Model UV-45 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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Base Price (Before options):

$25.00

Our products can be painted with a durable baked-on powder coating surface finish.
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Brand: Active VentilationUPC(GTIN): 843951006543 Model UV-45 Category:
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