Product Description

EVT20T-CPT | 20.5-Inch to 12-Inch & 290mm Multi-Truss Conversion Plate

The EVT20T-CPT Multi-Truss Conversion Plate is the single engineered adapter that eliminates the compatibility wall between bolted plated truss and 290mm conical truss systems. One side carries precision-drilled bolt-hole patterns that align with standard 20.5-inch and 12-inch end-plated (bolted) truss; the other side carries four pre-installed conical half-couplers that pin directly into any 290mm conical section — turning two incompatible connection standards into one continuous structural line without custom fabrication, field modifications, or improvised rigging. Machined from a solid 12 mm thick slab of 6061-T6 aluminum alloy and weighing 19.26 pounds, this is the plate that rental houses pull when a client build requires plated ground supports married to conical vertical towers, that AV integrators spec when extending legacy bolted infrastructure with modern conical sections, that touring coordinators carry in the road case for tying into house truss that doesn’t match the road package, and that growing production companies rely on to phase new 290mm conical stock into an existing bolted inventory without retiring a single piece of truss before its time.

Function & Application:

The EVT20T-CPT operates at the junction point where two truss connection philosophies meet. On the bolted side, multi-pattern precision-drilled holes accept Grade 8 bolts that align with both 20.5-inch and 12-inch plated truss end-plate configurations — one plate, two bolt standards, no guesswork about which pattern to order. On the conical side, four half-conical couplers (spigots) seat directly into 290mm chord ends and lock with tapered pins and R-clips, delivering the same rapid pin-and-clip assembly used across every conical connection in the 290mm market. The couplers are removable and reinstallable — they can be taken off the plate for inspection, replacement, or servicing and put back on without affecting the plate itself, giving the adapter a field-serviceable lifespan that outlasts any single set of wear hardware. A large central pass-through cutout keeps power and data cables routed cleanly through the truss core without pinching at the transition point. All connection hardware ships included — 4× Grade 8 bolts, nuts, and washers for the plated side, plus conical couplers, tapered pins, and R-clips for the 290mm side — so the plate goes from box to build without a separate hardware order. Built from EN AW-6061-T6 aluminum alloy under TÜV-certified manufacturing processes, the EVT20T-CPT carries the same material and production certification as the truss sections it connects. Beyond truss-to-truss conversion, the plate’s broad 20.5-inch square footprint and existing 5/8-inch bolt holes also make it a practical wall or ceiling mount base for 290mm conical truss — lag-bolt or through-bolt the plate to a structural surface, pin your 290mm sections into the conical couplers on the opposite face, and you have a permanent mounting point without sourcing a separate wall-mount bracket.

Key Features

• Dual Bolt-Pattern Interface: Precision-machined hole patterns on one face align with both 20.5-inch and 12-inch plated truss bolt configurations — one plate serves two bolted standards, eliminating the need for separate adapters for each truss size in your inventory.
• Removable Conical Half-Couplers: Four spigots on the opposite face pin directly into 290mm conical truss chord ends using standard tapered pins and R-clips. The couplers are removable and reinstallable — take them off for inspection or replacement and reinstall without retiring the plate, keeping the adapter field-serviceable for the long term.
• Heavy-Duty 12 mm Solid Plate: Machined from a single slab of 6061-T6 aluminum alloy — no welds, no laminations, no weak points in the load path between the bolted face and the conical face.
• Central Cable Pass-Through: A large cutout in the plate center provides an unobstructed route for power, data, and signal cables transitioning through the truss core at the conversion point, preventing cable pinching and maintaining clean wire management.
• Complete Hardware Kit Included: Ships with 4× Grade 8 bolts, nuts, and washers for the plated connection plus conical couplers, tapered pins, and R-clips for the 290mm side — every fastener needed for a full connection on both faces, straight out of the box.
• Wall & Ceiling Mount Capable: The broad 20.5-inch square plate with pre-drilled 5/8-inch bolt holes doubles as a structural mounting base for 290mm conical truss — bolt the plate directly to a wall, ceiling, or structural beam and pin 290mm sections into the conical couplers on the opposite face for a permanent installation without a dedicated wall-mount bracket.
• TÜV-Certified Manufacturing: Produced under the same TÜV-certified processes as the truss lines it bridges — the conversion plate carries an equivalent quality standard to the structural sections on either side of the joint.

Who It’s For

• Rental House Operations Managers — You’ve accumulated different truss standards over years of purchasing — 20.5-inch plated ground supports in one bay, 290mm conical towers in another — and every time a client build requires both systems in the same structure, you’re stuck choosing between declining the configuration or renting supplemental truss from a competitor. This conversion plate turns your entire mixed inventory into a single compatible fleet. Marry plated bases to conical verticals, connect plated grids to conical extensions, and say yes to project configurations that used to require duplicate truss lines — protecting your margins on every rental instead of spending capital to replace perfectly functional equipment.
• AV Integration Firms — You’re walking into corporate campuses, broadcast studios, and performing arts centers that already have bolted plated truss embedded in permanent infrastructure, and the scope calls for extending or reconfiguring that grid with modern 290mm conical sections. Custom fabrication means lead times and change orders; this plate means a cataloged, certified component that drops into your installation drawing as a standard part. And when the project calls for mounting 290mm conical truss directly to a wall or structural ceiling rather than connecting to existing plated infrastructure, the same plate does double duty — bolt it to the surface through the 5/8-inch holes and pin your conical sections into the couplers on the opposite face. Keep your project timelines intact and hand the client a structure built entirely from manufacturer-certified components instead of one-off shop pieces.
• Touring Production Coordinators — You advance into a venue and discover the house truss is bolted plated while your road package is 290mm conical — or the other way around. Without an adapter, you’re burning hours on workaround rigging or scrambling for a last-minute local rental that may not even arrive before load-in ends. A conversion plate in the road case means you tie into whatever house system is waiting for you, connect your conical sections to the venue’s bolted grid, and stay on schedule without carrying duplicate truss for every possible venue configuration you might encounter on the tour.
• Event Production Companies Scaling Inventory — You started your company on 12-inch or 20.5-inch bolted truss and you’re ready to move into 290mm conical, but replacing your entire stock in one purchase isn’t realistic. This plate lets you phase in conical sections alongside your existing bolted inventory — use both standards together on live builds while spreading the capital investment over multiple budget cycles. Every piece of truss you already own stays in rotation, every new conical section integrates immediately, and you transition at your own pace without a single week where half your inventory sits idle because it can’t connect to the other half.
• Structural & Rigging Engineers — The EVT20T-CPT is a 12 mm solid 6061-T6 aluminum conversion plate manufactured under TÜV-certified processes, featuring multi-pattern bolt holes on one face and four removable conical half-couplers on the other. It appears on an engineered drawing as a standard cataloged adapter between bolted and conical systems, and can also be specified as a structural wall or ceiling mount base for 290mm conical truss using the existing 5/8-inch bolt holes. Load calculations for any structure incorporating this plate must be based on the weakest link in the connected system — do not rate the combined assembly above the capacity of the lowest-rated component on either side of the conversion point. All wall or ceiling mount applications require structural verification of the mounting surface and fastener selection by a licensed engineer. STEP and DWG files are available upon request for integration into structural drawings.

Designed by Evolve Truss, the EVT20T-CPT is the adapter that turns a cross-system compatibility problem into a single bolted-and-pinned connection — one plate, two standards, every piece of truss in your inventory back in play.

⚠️ Safety & Engineering Notice

❗ Critical Load Rating Information: The use of conversion plates affects the overall beam deflection and load capacity of the connected truss lines. Always calculate loads based on the weakest link in the connected system. Do not suspend loads directly from the conversion plate itself. A licensed professional engineer must review all structures, particularly those mixing different truss types and sizes.

Important Guidelines for Safe Use:

• Inspect the plate, conical couplers, and bolt holes for deformation, cracking, or wear before every use. When removing and reinstalling conical couplers, verify that each coupler seats fully and securely before loading the connection.
• Ensure all bolts, nuts, and conical pins are properly secured; the plate must be fully connected on all designated points on both the bolted and conical faces.
• The purchase of this product does not authorize specific installations; a licensed professional engineer shall review all structures that combine different truss types and sizes.

⚠️ Compatibility Warning for Mixed-Brand Builds

Crucial Steps for Safe Assembly:

• Verify Bolt Patterns: Bolt-hole spacing on plated truss varies between manufacturers. Measure the bolt pattern on your existing 20.5-inch or 12-inch plated truss and compare those dimensions against the EVT20T-CPT specifications before purchase.
• Check Chord Alignment: Ensure chord alignment is precise to prevent uneven loading across the bolted connections.
• Mixing incompatible plated truss with this conversion plate can compromise connection integrity and lead to structural failure.

⚠️ CAD Resources Available

STEP & DWG Files Available: Engineers, designers, and project managers can request these files for seamless integration into CAD drawings and structural planning.

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Contact us today to maximize your mixed inventory with the EVT20T-CPT Multi-Truss Conversion Plate.