The framework is made of strong, lightweight metal and is easy to assemble with the convenience of adjustable screen tension included. All of our frames come standard with black velvet frame surfacing which is normally charged extra by other manufacturers. The velvet material eliminates the projector glare which an untreated metal frame reflects during use. The screen material is Elite's AcousticPro1080P2 acoustically transparent fabric. It produces a bright, accurate, and moire free image for projectors rated up to 1080p. The smallest screens have an 84" diagonal measurement that will dwarf most large screen displays while larger sizes go up to 150" for a truly larger-than-life presentation.