Air Intake Roof Louver | 18″ Diameter 4″ Tall Collar | 254 Sq. In. NFA | Model PV-18-C4

$172.00

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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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The Roof Louver Air Intake | Pop Vent | PV-18-C4

The 18 inch Pop Vent Air Intake Vent is ideal for maintaining proper attic ventilation. The PV-18-C4 is 18 inches in diameter with a 4 inch tall collar. In other words, this vent has 4 inches of clearance between the base and the inner louvers. In addition, the 18 inch Pop Vent has 254 inches of Net Free Area (NFA) and a standard 28” x 28” square flange.

Installation:

18 inch diameter roof vents are considered commercial size therefore should be used in commercial settings. For those looking to ventilate their homes, please view roof vents with a smaller diameter.

This attic vent is suitable for installation in climate zones 1-3 however; the Pop Vent comes in an array of diameters and collar heights allowing for installation in any climate zone. See the Climate Zone Chart to determine the proper collar height for installation in your area.

To determine the number of vents you may need for proper attic ventilation, see our Vent Calculator.

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:

The Air Intake Roof Louver provides fresh air into the attic or plenum.  Without proper rooftop ventilation, heat and moisture can get trapped in the attic which may cause decay of the structure. This attic vent also helps to keep insulation dry in the winter to prevent the growth of mold. Additionally, the round design is aerodynamic to withstand wind speeds up to 200 mph. The 18 inch Pop Vent is great for commercial roof applications because of its low profile. It can also be painted to match the color of the asphalt shingles.

Pop 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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Pop Vent - Technical Drawing Downloads

Product LinkDrawing- Unmarked Drawing- Measurements Drawing- Cut Away with Measurements
PV-18-C4dwg file icon - click to download CAD (dwg) fileunmarked drawingpdf file icon - click to download pdf file
dwg file icon - click to download CAD (dwg) fileWith Measurements drawingpdf file icon - click to download pdf file
dwg file icon - click to download CAD (dwg) fileCut Away and Measurements drawingpdf file icon - click to download pdf file

Pop Roof Vent - Installation Instructions

Product LinkInstallation Instructions (Shingled Roof) - pdfInstallation Instructions(Flat Roof) - pdf
PV-18-C4Installation Instructionpdf file icon - click to download pdf fileInstallation Instructionpdf file icon - click to download pdf file

Calculate number of Model PV-18-C4 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.


Select Options and Click "Add To Cart" button below

Base Price (Before options):

$172.00

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): 843951002354 Model PV-18-C4 Category:
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