The curtain consists of impact-proof polycarbonate panels with a thickness of 3, 5 or 6 mm. These are joined using anodised (E6EV1) aluminium profiles. The end pieces are screwed to prevent lateral movement of the profiles. The robust double-walled end rail is sealed with rubber. The curtains provides approx. 85 % transparency. The polycarbonate complies with fire protection class B1 according to DIN 4102, flame retardant – drip down.