The present disclosure is drawn to an air flow device and system for evaluating fabric integrity and cyclic stress of a media banner, and a method of simulating prolonged wind exposure on a media banner. The device can comprise a duct having an exit opening with an opening area of 100 to 250 in2; a blower in fluid communication with the duct, the blower and the duct adapted to generate an ambient air speed at the exit opening of 35 mph or more, wherein the exit opening is positioned at least 2 feet from the blower; and a programming panel electrically coupled with the blower and adapted to program and cycle operation times and air speeds.