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  • Quartz Grey [Weatherwood] STANDARD RAL 7039
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  • Quartz Grey [Weatherwood] STANDARD RAL 7039
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  • Quartz Grey [Weatherwood] STANDARD RAL 7039
  • Quartz Grey [Weatherwood] STANDARD RAL 7039
  • Quartz Grey [Weatherwood] STANDARD RAL 7039
  • Quartz Grey [Weatherwood] STANDARD RAL 7039
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Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8" Diameter | Curb Mount Base | 50 Sq. In. NFA

Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8" Diameter | Curb Mount Base | 50 Sq. In. NFA

KV-8-CMF

843951008899

Keepa Attic Vent with Curb Mount Sub-Base  

Price: $70.00 USD

$70.00 USD
Sale Sold out

  • Aluminum Unpainted

    Aluminum Unpainted

  • Plain White STANDARD+$15

  • Plain Black STANDARD+$15

  • Pine Green STANDARD RAL 6028+$15

  • Quartz Grey [Weatherwood] STANDARD RAL 7039+$15

  • Terra Brown STANDARD RAL 8028+$15

-- Please Select --
Color

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Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Aluminum Unpainted
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Plain Black STANDARD
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Terra Brown STANDARD RAL 8028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Pine Green STANDARD RAL 6028
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Quartz Grey [Weatherwood] STANDARD RAL 7039
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Plain White STANDARD
Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8" Diameter | Curb Mount Base | 50 Sq. In. NFA
Drawings
Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8" Diameter | Curb Mount Base | 50 Sq. In. NFA
Drawings
Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8" Diameter | Curb Mount Base | 50 Sq. In. NFA Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8

Attic Ventilation for Flat Roofs | Keepa Vent 8" Diameter with Curb Mount Sub-Base | Model KV-8-CMF

The Keepa Vent with Curb Mount Base product line is ideal for flat roof ventilation. AVP offers an 8-inch diameter roof vent with an 11-inch tall collar. This roof vent has an NFA of 50 sq. inches with a curb mount base inside dimensions of 11.5” x 11.5”, designed for a square-shaped roof curb with an outer dimension of 11 3/8" x 11 3/8" unless the curb will be covered in roofing material. Before the curb is covered, it should measure 11-inch x 11-inch.

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

The 8-inch Keepa Attic with Curb Mount Base Vent is for ventilating low-slope or flat roofs and is used for ventilating attics and plenums as a roof exhaust vent or air intake roof vent. The removable vent head allows easy installation on EPDM, PVC, and TPO roofs, making it compatible with membrane roofs. Click here to view our installation guides.

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

How it operates:

The 8-inch Keepa Attic Vent with Curb Mount Base removes moisture from the attic during the winter and heat during the summer, extending the life of the building structure. The 11-inch tall collar is suitable for all locations, including those that accumulate high snowfall. In addition, the round design is aerodynamic and can withstand wind speeds beyond 200 mph.

This roof vent is ideal for installation in all climate zones and comes in various sizes with an optional curb mount flange for covering roof curbs or a tailpipe adaptor for ventilating a duct.

For any questions, please see the frequently asked questions page, email the sales team at sales@roofvents.com, or call 845-565-7770

Installation
Colors

Pending

Pending

Active Ventilation product approval information Active Ventilation product approval information
Attic Vent with Curb Mount Sub-Base - Keepa Vent | 8
Miami-Dade County Approval

Pending

  • Roof Curb 12 inch Tall for 8 inch Diameter Vents or Fans

    Model RC-8-H12

    Model RC-8-H12

    Model No: SRC-8-H12

    Opening: 10"

    Height 12"

    Lenth: 11"

    Price: $39.00 USD

    $39.00 USD
  • Roof Curb with Insulation (Inside Throat Diameter: 10” Outside Length & Width: 11” Height: 12”) | Model RC-8-H12-Ins

    Model RC-8-H12-Ins

    Model RC-8-H12-Ins

    Model No: SRC-8-H12-Ins

    Opening: 10"

    Height 12"

    Lenth: 11"

    Price: $59.00 USD

    $59.00 USD
  • Roof Curb 6 inches tall for 8 inch Diameter Vents

    Model RC-8-H6

    Model RC-8-H6

    Model No: SRC-8-H6

    Opening: 10"

    Height 6"

    Lenth: 11"

    Price: $30.00 USD

    $30.00 USD
  • Insulated Roof Curb (Inside Throat Diameter: 10” Outside Length & Width: 11” Height: 6”) | Model RC-8-H6-Ins

    Model RC-8-H6-Ins

    Model RC-8-H6-Ins

    Model No: SRC-8-H6-Ins

    Opening: 10"

    Height 6"

    Lenth: 11"

    Price: $46.00 USD

    $46.00 USD
  • Roof Curb (Inside Throat Diameter: 10” Outside Length & Width: 11” Height: 8”) | Model RC-8-H8

    Model RC-8-H8

    Model RC-8-H8

    Model No: SRC-8-H8

    Opening: 10"

    Height 8"

    Lenth: 11"

    Price: $32.00 USD

    $32.00 USD
  • Roof Curb with Insulation (Inside Throat Diameter: 10” Outside Length & Width: 11” Height: 8”) | Model RC-8-H8-Ins

    Model RC-8-H8-Ins

    Model RC-8-H8-Ins

    Model No: SRC-8-H8-Ins

    Opening: 10"

    Height 8"

    Lenth: 11"

    Price: $48.00 USD

    $48.00 USD

Calculate number of Model  KV-8-CMF  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.