DeckAir® VentUse it for Intake or Exhaust!

EVA-34 installation

The Lomanco Deck-Air®is a shingle over roof intake vent that installs on the roof deck! This multi-tasking vent provides continuous intake airflow and weather protection that can be installed at the roof edge or off the roof edge as required by your ventilation and construction needs.

The DA-4, as all Lomanco vents, provides maximum ventilation capacity balanced with maximum weather protection. - This is known as the Lomanco Balance.

The Deck-Air®, when properly installed with proper exhaust vents, provides a balanced ventilation system to rid your attic space of trapped heat and moisture.

The DA-4 is an excellent solution for roofs with little or no overhang for the installation of traditional intake vents. Installing the Lomanco Deck-Air® can also boost an insufficient intake system to help you achieve a balanced ventilation system.


The DA-4 has a tapered lo-profile design that provides enhanced weather protection. The DA-4 is also made from the same durable, long lasting, field tested material as the Lomanco Omni Series Vents. 2-1/2" ring shank nails are included in each box. The DA-4 has an optional specialty use as an off ridge exhaust (see exhaust tab below).


The DA-4 is ideal for roofs with no overhang or most any situation where traditional intake vents are impossible to install. The DA-4 can be installed on new construction or existing construction and installed at the roof edge or off the roof edge. The tapered transition method allows a smooth end taper to more aesthetically blend shingles back into the roof profile.

  • Features
  • Instructions
  • Literature
  • Model Info
  • Exhaust

Deck-Air® Intake Vent

  • 2 1/2" ring shank nails included.
  • Made from the same durable, long lasting and field tested material as the Lomanco Omni Series vents.
  • Fits roof pitches 3/12 to 16/12.
  • Unique design provides enhanced weather protection..
  • Integrated end plug every 2 inches.
  • 9 square inches of Net Free Area per linear foot.
  • Molded nail lines.
  • Intake slot width guidelines.
  • Patented.
  • Optional Specialty Use: The DA-4 can be used as an off ridge exhaust vent.
  • WUI product information.
  • Lifetime Limited Warranty.
Model Name Description Link
DA-4 Deck-Air® Intake Vent Roof Edge and Off Roof Edge Install  /></a>
Lit# Title Product Line Link
196 Lomanco Catalog All  /></a>
394 Ventilation Guide All  /></a>
291 3 Must Do Flyer All  /></a>
193 Going Green Flyer All  /></a>
292 Comic Ventilation Flyer All  /></a>
1097 Shingle Void All  /></a>
OLO Roof Vent Warranty 750-550PRO Series  /></a>
459 Deck-Air® Flyer Roof Vents  /></a>
496 Deck-Air® Ice Dam Test Roof Vents  /></a>
Model Color Length (ft.) NFA (in.2) CTN. QTY. CTN. WT. (lbs.)
DA-4 Black 4 36 10 Sections/40 ft. 32.5

Optional Use: Exhaust Applications

The DA-4 can also be used in exhaust applications, such as off ridge exhaust, roof meets wall exhaust, and single slope exhaust. Illustrations of these applications are provided below:

View specific product certifications by choosing the certification icon below.*

*Some products shown on page may not be certified.