da-lite dual vision tensioned advantage deluxe electrol - hdtv format 92 diagonal
dl4172 features handsome white powder coated closure doors and case provide a clean look and allow easy installation of ceiling tiles . designed to have the case installed during the rough-in stages of construction and the fabric assembly during the finish stage . patented in-the-roller motor mounting system for quiet operation . tab guide cable system maintains even lateral tension to hold surface flat while custom slat bar with added weight maintains vertical tension . front projection surfaces standard with black backing for opacity . standard with built in low voltage control and decora style 3 button wall switch . for easy installation the tensioned advantage deluxe is available with scb-100 and scb-200 rs-232 serial control board built into the case . ul plenum rated case . all front projection fabrics are standard with black backing for opacity . contains a motorized trapdoor that opens and closes to let the fabric out . screen material dual vision flexible fabric screen a unity gain flexible projection fabric capable of both front and rear projection . the surface is ideal for video projection under controlled light conditions . with an exceptionally wide viewing cone each seat in the audience will observe a uniform bright sharp image with no color shift . surface needs to be tensioned . screen surface can be cleaned with mild soap and water . flame retardant and mildew resistant . viewing angle 50 gain 1.0