Made of leno polypropylene mesh with reinforcing threads to resist tearing and spreading. Open mesh allows 15% wind passage, so it is popular in higher wind areas. Ultraviolet and mildew inhibitors built into fabric to extend useful life. Edges finished with four ply hems and grommets are installed every 18” all around. For additional wind forgiveness, boxed windows are available for additional cost. Imprinting is not available on this fabric due to its surface characteristics.