The AV Stumpfl projection screen spare part is a yellow screw bag intended for AV Stumpfl projection screen systems. It is identified by article number BFE-BTL/AV and is described as a bag for wing screws. The bag measures 23.5 × 16 cm. It is supplied as one piece and has a gross and net weight of 0.014 kg. The product is manufactured in China and is classified under customs tariff number 4202 32 10.