Ado Products ADO Products Durovent® 22" x 48" Polystyrene Attic Vent Chute

The Durovent® attic ventilation system helps keep air flowing in your attic. The ventilation system can be cut to fit most joist spaces and provides you with an economical way to meet energy code requirements for air flow. Install the system between rafters to provide an air channel through insulation to help keep air flowing freely in your attic.