The AV Stumpfl MAGNUM roll-up modification is a system component for MAGNUM projection systems. It is designed for a fabric front that rolls up from the front, with the motor positioned on the right-hand side. The component is identified by article number BRZ-MOD/MAGNUM/VAMR and is supplied as a separate modification rather than as a complete projection screen. Its gross and net weight are each 0.1 kg, and the country of origin is Austria.