The CineGrey 3D® is an angular reflective front projection material designed to reject ambient light while maintaining superb picture quality. The CineGrey 3D® is the perfect solution for rooms that have little or no control over incidental light. This means that it’s an ideal fit for family rooms as well as lecture halls, boardrooms, sports bars, training facilities, and other business environments. In addition, the CineGrey 3D® increases projector brightness 1.2 times the amount. This is perfect for low lumens output projectors!