Product Data Sheets, Free Area, construction materials, etc.

Half-round dormer vents, attic ventilation, available in copper, aluminum, and galvanized steel. Half round dormer vents are typically used for their architectural design appeal and used near the upper portion of the roof structure to allow volumes of warm air to escape and thereby keep the roofing materials cooler as the cooler air enters through the soffit or eave vents which are located low on the roof structure and typically under the eaves.