The AV Stumpfl Anti-Sway-Brace, LEFT, article number BFZ-ASB/L, is a left-hand diagonal bracing component for an AV Stumpfl projection-screen support system. The German description identifies it as “Diagonalverstrebung LINKS,” confirming its left-side orientation. The article is supplied as one piece. Its net weight is 3.14 kg and gross weight is 3.2 kg. The listed country of origin is Austria. No dimensions, series, compatibility details, or accessories are specified.