Electric : Da-Lite Dual Masking Electrol
Ideal for home theaters or where a variety of image formats are projected. View from "Letterbox" to "NTSC" format or from "HDTV" to "NTSC" format with concealed-in-the-ceiling screen. Second motor lowers and raises black masks into position to convert screen to different format. Patented in-the-roller motor mounting system for quiet operation. Unique "step-back" masking design eliminates shadows. All fabrics listed below will be seamless.