Joto-Vent System Overview

Joto-Vent System Overview

The Joto-Vent and the Architectural-covering (or the Insect Prevention Strip with the Z-Covering) are always required and meet the minimum opening requirement of 1/8-inch (3.2 mm) in IRC's Section R408.2.

  • The 2 x 6 Joto-Vent is twice as thick as the 1 x 6 Joto-Vent.  The Net-Free Ventilation Area (NFVA) is 11.03 in²/ft for the 2 x 6 Joto-Vent and 4.81 in²/ft for the 1 x 6 Joto-Vent.
  • The Insect Prevention Strip with the Z-Covering is an alternative of the Architectural-covering that helps to minimize the impact on the aesthetic appearance with its smaller protruding dimensions. Please use the Z-Covering or similar material to prevent the Joto-Vent from direct sunlight and rainwater getting into the crawl space.
  • The Z-Covering is compatible with either the 2 x 6 or 1 x 6 Insect Prevention Strip.
  • The Airtight Joto-Vent is used to block the air when the crawl space is built next to the garage to eliminate contaminated air flow into the crawl space, and only available with the 1 x 6 Joto-Vent.

2 x 6 Joto-Vent System

2 x 6 Joto-Vent
2 x 6 Joto-Vent
2 x 6 Architectural-covering
2 x 6 Architectural-covering
2 x 6 Insect Prevention Strip
2 x 6 Insect Prevention Strip
Z-Covering
Z-Covering

1 x 6 Joto-Vent System

Joto-Vent
1 x 6 Joto-Vent
Architectural-covering
1 x 6 Architectural-covering
1 x 6 Insect Prevention Strip
1 x 6 Insect Prevention Strip
Z-Covering
Z-Covering
Airtight Joto-Vent
Airtight Joto-Vent
Click on each in the drawing below (or scroll down if you are using a mobile device) to see how each component is installed.
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Joto-Vent

The primary component of the Joto-Vent System is placed between the concrete foundation wall (2 x 6 or 2 x 8) and the wooden sill plate to provide natural airflow around and through the entire perimeter of the home’s crawl space.

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2x6 Joto-Vent

1x6 Joto-Vent

Joto-Vent
Architectural-covering

The Joto-Vent Architectural Covering acts as the cover for the Joto-Vent and the seat for the exterior wall sheathing.

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2x6 Architectural-covering

1x6 Architectural-covering

Architectural-covering
Airtight Joto-Vent

The KPK-N140U Airtight Joto-Vent is our improved design of the Joto-Vent Air-blocking. It is used to create an air barrier between the garage and crawlspace and also can be used for slab on grade and entry areas.

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Airtight Joto-Vent
Joint Cover

One of the accessories used with Architectural-covering in order to connect them together at joint sections for convenience and aesthetic purposes.

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2x6 Architectural-covering Accessories

1x6 Architectural-covering Accessories

Z-Covering Accessories

Joint Cover
Outside Corner

One of the accessories used with Architectural-covering in order to connect them together at outside corner sections for convenience and aesthetic purposes.

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2x6 Architectural-covering Accessories

1x6 Architectural-covering Accessories

Z-Covering Accessories

Outside Corner
Inside Corner

One of the accessories used with Architectural-covering in order to connect them together at inside corner sections for convenience and aesthetic purposes.

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2x6 Architectural-covering Accessories

1x6 Architectural-covering Accessories

Z-Covering Accessories

Inside Corner
Endcap

One of the accessories used with Architectural-covering in order to cap end sections for convenience and aesthetic purposes.

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2x6 Architectural-covering Accessories

1x6 Architectural-covering Accessories

Z-Covering Accessories

Endcap
Insect Prevention Strip w/ Z-Covering

The Insect Prevention Strip with the Z-Covering acts as the cover for the Joto-Vent and the seat for the exterior wall sheathing.

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2x6 Insect Prevention Strip

1x6 Insect Prevention Strip

Z-Covering

Insect Prevention Strip w/ Z-Covering

Find out how many of each part you will need for your home.

Joto-Vent System Calculator


The unique 2-part design of the Joto-Vent System® increases the value of your newly built home and provides solutions to current conventional vent box issues.

Watch How It Works

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