Rectangular Attic Roof Vent Low profile copper attic roof vent provides 75 square inches of net free airflow in a low height design. Custom sizes are available upon request. Made of strong 16 ounce copper. Listing Back To Top Design Visualizer Previous Next Design Visualizer CADdetails™ You need to be logged in to view & download files. Login/Register New to CADdetails? Register to enjoy full access to unlimited 3D models, CAD drawings and specifications. It's free! Downloads Product Info About Media CAD PDF DWF DWG Printable CAD VWX DXF Download All Add to Project+ Favorite User Feedback Company Resources Back to top Brochures Product Brochure Resource Library