A window made from a transparent material is designed to fit through a slat of a accordion type of storm shutter that is capable of being mounted when the storm shutter is mounted to the window, door and the like of a premise. The window includes a large diameter portion that is larger than the cut-out in the slat and a smaller diameter portion with outside threads fits through the cut-out. A ring on the other side of the slat engages the threads to thread the window to the slat. Other fitting on the window are contemplated by this invention.