Event Lighting T4BL3 400mm Spigot Box Truss (3m) (Silver)

Event Lighting's 400mm spigot box truss is engineered for touring and permanent installation contexts where load capacity and structural integrity matter. Built from aluminium alloy 6061–T6 with a 3mm wall thickness, this lightweight yet rigid framework handles the demands of rigging stage lighting and audio equipment across venues. The 50mm x 3mm main tube forms the primary load path, whilst 50mm x 2mm vice braces and 25mm x 2mm diagonal braces provide triangulated support against deflection.

Available in 0.2m through 4m spans, the truss accommodates diverse ceiling heights and stage configurations without requiring mid-span support columns. At 3m length, the structure can sustain uniform loads of 300kg/m with single centre–point loads reaching 3000kg, making it suitable for substantial rig weights. The washed aluminium finish resists oxidation, and TUV certification confirms structural compliance. Critical installation detail: the ladder–style geometry requires chords facing downward when positioned horizontally; inverting orientation nullifies load ratings and creates unsafe conditions.

Features

• 6061–T6 aluminium alloy with 3mm main tube wall thickness
• Main tube: 50mm x 3mm; vice brace: 50mm x 2mm
• Diagonal bracing: 25mm x 2mm throughout
• 3m span rated 300kg/m uniform load capacity
• Single centre point load capacity: 3000kg maximum
• Spans from 0.2m to 4m available for custom setups
• Washed finish with TUV structural certification
• Chords must face downward in horizontal configuration