Product Description
EVT290A-H180L | Variable Angle Truss Hinge – Left Side
The EVT290A-H180L is a heavy-duty Left-Side variable angle hinge connector designed for the EVT290S 290 mm square truss series. The “L” designation indicates this unit is configured for the left side of the truss connection. This versatile component is a critical tool for truss ground support systems, allowing for the safe erection of vertical towers.
Function & Assembly:
By installing this hinge (often paired with a corresponding Right-Side unit on the opposite chords) between the truss tower and the base, installers can assemble the tower horizontally on the ground and then safely pivot (tip) it into the vertical position. It can also be used to create custom angular junctions ranging up to 180 degrees for non-standard geometric shapes.
Key Features
- Orientation: Left-Side Hinge (identified by the ‘L’ suffix).
- Hinge Body Length: Measures 88mm in length.
- Tower Erection Aid: Facilitates the “tip-up” method for raising ground support towers safely.
- Variable Angle Design: Allows for custom angles between 0 and 180 degrees.
- Robust Construction: Heavy-duty hinge mechanism designed to withstand erection stresses.
- Conical Compatibility: Connects seamlessly with EVT290S, F34, and compatible 290mm square truss brands.
Designed by Evolve Truss, this hinge is an indispensable tool for production companies that regularly deploy ground support systems or require flexible design options.
⚠️ Safety & Engineering Notice
❗ Structural Warning: While the hinge is load-bearing during the erection phase, it behaves differently than a rigid corner block. When used in a static structure, the hinge position must be secured, and the overall structural stability (bracing/guying) must be verified by a qualified rigger or engineer.
Important Guidelines for Safe Use:
- Disclaimer: The purchase of this product shall not be construed as authorizing or approving a specific installation or usage.
- Engineering Review: A licensed professional engineer shall review all structures, lighting plots, or any other product uses.
- Inspect the hinge pin and leaves for wear or deformation before every use.
- Ensure all conical couplers and safety pins are fully engaged before lifting or loading.
- Do not exceed the load capacity of the truss system.
- Truss assembly should be carried out only by those familiar with trussing and rigging.
⚠️ Compatibility Warning for Mixed-Brand Builds
Crucial Steps for Safe Assembly:
- Verify all dimensions before integrating with other truss brands.
- Confirm conical connector type, node spacing, and system geometry.
- Mixing components without verification may compromise structural integrity and safety.
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Contact us today to add the EVT290A-H180L (Left) and matching components to your rigging inventory.



