Keepa Attic Vent | 8″ Diameter | 50 Sq. In. NFA | Model KV-8

$39.00

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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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Keepa Attic Vent | KV-8

The KV-8 is the Keepa Attic Vent with an 8 inch inner diameter and an 11 inch tall collar. This attic vent has a Net Free Area (NFA) of 50 sq. in. This particular Keepa Vent comes with a standard 13” x 13” square flange.

Installation: Best used on flat roofs, no more than 2/12 pitch

The Keepa Attic Vent is ideal for ventilating low slope or flat roofs. Likewise, it is typically used for ventilating attics and or plenums as a roof exhaust vent or as an air intake roof vent. The vent head is removable therefore allowing easy installation on EPDM or TPO roofs. In addition, this attic vent is compatible with membrane roofs. Click here to view our installation guides.

To determine the number of vents you may need, see our Vent Calculator.

How it operates:

The Keepa Vent removes moisture from the attic during the winter and heat during the summer to extend the life of the building structure. The 11 inch collar height is good for locations that accumulate high levels of snowfall. In addition, the round design is aerodynamic to withstand wind speeds up to 200 mph.

As a result, this attic vent is suitable for installation in all climate zones. Most importantly, the Keepa Attic Vent comes in an array of sizes with an optional curb mount flange for additional clearance or tailpipe adaptor allowing for duct ventilation.

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

Keepa 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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Keepa Attic Vent - Technical Drawing Downloads

Product LinkDrawing- Unmarked dwgDrawing- Cutaway
KV-8dwg file icon - click to download CAD (dwg) fileunmarked 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

Keepa Roof Vent - Installation Instructions

Product LinkInstallation Instructions - pdf
KV-8Installation Instructionpdf file icon - click to download pdf file

Calculate number of Model KV-8 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 (Not Including Shipping and Options):

$39.00

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












Brand: Active VentilationUPC(GTIN): 843951008844 Model KV-8 Category:
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