AV Stumpfl SK21 roll-up transport box for roll-up screen systems with a maximum fabric width of 450 cm. The heat-treated box is IPPC-certified and intended for transport and protection of the associated roll-up screen. Its listed internal dimensions are 260 × 330 × 500 mm. Gross and net weight are both 73 kg. The unit is supplied under article number BRV-SK21/450/H.