Antra 120" 16:9 Toile de projection à cadrage fixe - BlancHigh Tensioned Surface The multiply vinyl projection screen material is kept under high tension by a unique means found only in Antra products. Steel bars are inserted into a looped seem that runs round the edge of the material. The bars are then fixed into the aluminium frame, causing the material to be pulled evenly from all four sides. Frame The super rigid frame is of curved cast aluminium with a black velvet finish that absorbs any stray light