Each carton contains 10 Vents. The ADO Products Durovent 23-1/2 in. x 46 in. Rafter Vent with Built-In Baffle helps keep air moving in your attic. The ventilation system features polystyrene construction， which is lightweight and moisture resistant and the integrated baffle means that you need no blocking material between the vent and the top plate.

Install between rafters to provide an unobstructed air channel through insulation to help keep air flowing freely from soffits to ridge vents

Ideal for high-volume new construction or inexpensive re-insulation

Designed to friction-fit between the rafters or trusses with the vent's cones pushed up against the roof deck

Secure the vent in place by stapling the wide nailing flanges to the truss and top plate by using a horizontal stroke with your hammer tacker (hammer tacker not included)

Polystyrene material provides a lightweight air channel

Water resistant and durable， blocking out moisture and wind from penetrating the attic， to satisfy most building-code requirements

Economical way to meet energy code requirements for air flow

Integrated baffle eliminates the need for blocking material such as batt insulation between the vent and the wall top plate， as is commonly the practice for installation of rafter vents without an integral baffle

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