Grandview 16:9 Tab Tensioned Electric Wall / Ceiling Acoustic ScreenSuperior Projection Screen Surface The acoustic material on our Tab Tension screens is designed to let the sound from speakers mounted behind the screen through to the audience with the minimum of interference to sound or picture quality. It is not only pulled down by the weight of the bar but also from the left and right side by a Nylon string. The string is periodically connected to the material via small Tabs, hence the name Tab Tension. Unlike a