1. Heavy Duty 300 × 300mm Box Truss

Nominal truss section:

300 × 300mm

approximately:

12 × 12in

The four-chord box configuration provides a professional truss format for:

• event lighting;

• concerts;

• exhibitions;

• rental structures;

• temporary event frames;

• stage-related structures.

This is positioned as a heavy-duty professional bolt truss, not lightweight DJ truss.

2. 50mm Main Tubes with 3mm Wall

Main chord specification:

Tube Diameter: Approx. 50mm / 2in

Wall Thickness: 3mm / approx. 0.12in

The diagonal tubing is approximately:

25mm / 1in

with:

3mm wall thickness

for the corresponding product configuration.

When comparing truss, do not look only at the outside size.

Two products can both be called 300mm box truss while using different:

tube diameters + wall thicknesses + end plates + connection systems.

3. Plate-Ended Bolt Connection

Each truss section uses a rigid plate-ended connection.

Instead of inserting conical connectors into the main tubes, two end plates are aligned and connected mechanically with bolts.

This connection system is useful for buyers who already own compatible bolt truss and want to:

• expand an existing structure;

• replace damaged straight sections;

• add new standard lengths;

• order special custom lengths.

4. Four-Bolt Connection Pattern

The end plate uses a four-point bolt connection.

Reference geometry for this product configuration:

Bolt Center Pattern: Approx. 171.5 × 171.5mm

Approx. 6.75 × 6.75in

Bolt Hole Diameter: Approx. 5/8in

These measurements are important when the buyer wants to connect the truss to existing inventory.

Never assume compatibility simply because both products are described as “12-inch bolt truss.”

5. Standard Lengths from 0.5–2.5m

DragonEvent will offer multiple standard SKU lengths between:

0.5m and 2.5m

The exact sizes and pricing can be selected directly from the product variants.

A typical range can include:

0.5m / 1.0m / 1.5m / 2.0m / 2.5m

with additional sizes offered as Custom Length.

6. Custom Length Manufacturing

Custom length is useful when standard truss modules do not produce the exact finished dimension required.

Typical reasons include:

• fixed venue dimensions;

• exhibition booth dimensions;

• matching existing inventory;

• replacement sections;

• reducing unnecessary spacer sections;

• repeated rental configurations with unusual dimensions.

The buyer can provide the required finished truss length for confirmation before production.

7. Designed for Professional Rental Use

For rental businesses, the goal is usually not to own every possible truss length.

A better inventory strategy is often to keep several reusable standard lengths and add custom sections only when there is a recurring practical requirement.

For example:

0.5m + 1m + 2m + 2.5m

already allows many useful combinations without creating too much inventory complexity.

Compatibility Note

When purchasing this product as an extension or replacement for an existing truss system, confirm:

Truss Section + End Plate Dimensions + Bolt Center Distance + Bolt Hole Diameter + Main Tube Position + Connection Hardware

before ordering.

Visual similarity is not enough to confirm compatibility.

Professional Event Lighting

The 300mm box format is suitable for professional lighting structures where a heavier truss system is required than compact mobile DJ truss.

Typical mounted equipment may include compatible:

moving heads, PAR lights, lighting bars and other event fixtures.

Fixtures still require the correct clamps and safety hardware.

Concert & Live Event Structures

Straight plate-ended bolt truss can form part of:

• rectangular lighting frames;

• stage side structures;

• ground-support truss;

• concert lighting systems;

• temporary production frames.

For large spans, towers, roofs or significant suspended equipment, the straight truss should be evaluated as part of the complete structural system.

Exhibition & Trade Show Structures

Custom length is particularly useful for exhibition applications.

Booth dimensions are often fixed, so a buyer may need a section that is not exactly:

1m / 2m / 2.5m

A custom plate-ended section can help match the required overall dimension without introducing unnecessary joints.

Rental Company Inventory

For rental companies, a modular set of several lengths normally gives better long-term flexibility than relying only on the longest available truss.

For example:

1m + 2m = 3m

0.5m + 2m = 2.5m

1m + 1.5m = 2.5m

This allows the same inventory to serve many different event layouts.

How to Choose

Step 1 — Confirm Bolt Truss or Spigot Truss

This product is:

Plate-Ended Bolt Truss

It does not use:

Conical Couplers + Pins + R-Clips

If your current inventory is spigot truss, this is not a direct replacement.

Step 2 — Measure the Existing End Plate

If connecting to an existing system, measure:

overall end-plate dimensions

bolt center distance

bolt-hole diameter

and compare them with the new truss.

Step 3 — Choose the Required Length

Start with the total structure dimension.

For example, if you need a:

5m straight beam

possible combinations include:

2.5m + 2.5m

or

2m + 2m + 1m

The better solution depends on:

transport + storage + future reuse + number of connections.

Step 4 — Balance Long Sections and Modularity

Longer truss sections give:

fewer connections

but shorter sections give:

greater flexibility + easier transport + easier storage.

For many DragonEvent buyers, modularity is more useful than simply choosing the longest available section.

Step 5 — Use Custom Length Where It Adds Real Value

Custom manufacturing is most useful when:

• a fixed venue dimension must be matched;

• an existing structure requires a replacement;

• a repeated rental system uses a non-standard dimension;

• a standard combination would require unnecessary short sections.

For general rental inventory, standard lengths should normally remain the first choice.

Minimum Practical Package

For one additional straight section in an existing compatible system:

1 × Plate-Ended Bolt Truss Section

plus the required connection hardware is normally enough.

A complete connection may require:

**Bolts

• Nuts

• Flat Washers

• Lock Washers**

according to the actual truss system.

If lighting is mounted, also consider:

**+ Compatible 48–51mm Truss Clamp

• Fixture Safety Hardware**

For suitable clamps and connection accessories, browse Truss & Rigging Accessories.

Buying Mistakes to Avoid

1. Buying Only by “300mm Truss”

300mm tells you the approximate outside section.

It does not tell you:

wall thickness + end plate + bolt pattern + tube position.

2. Assuming Every 12-Inch Bolt Truss Is Compatible

Two 12-inch systems can still use different bolt-hole positions or plate geometry.

Always measure the actual end connection.

3. Ignoring the 3mm Wall Thickness

This product is intentionally positioned as a Heavy Duty 3mm Wall Truss.

Do not compare it directly with lighter truss using thinner main tubes simply because both have approximately 300mm outside dimensions.

4. Buying Only 2.5m Sections

Long sections reduce connection count, but they also:

• take more warehouse space;

• require longer transportation;

• reduce modular flexibility.

A mixed inventory is often more practical.

5. Using Custom Length for Every Section

Custom manufacturing is useful, but too many special lengths can make rental inventory difficult to manage.

Use standard sections where possible and custom sections where they solve a recurring real problem.

6. Copying Another Truss Load Table

A numerical load table from another truss system should not be treated as the structural rating for this product.

Actual allowable loading depends on:

span + support arrangement + connection + load location + actual manufacturing configuration.

Ask for the applicable technical information when the installation involves significant structural loading.

Upgrade Path

A small professional lighting structure may begin with:

Straight Bolt Truss
→ Matching Corners
→ Bases / Supports
→ Lighting Clamps

As the buyer expands into:

• longer spans;

• higher towers;

• suspended systems;

• outdoor structures;

• large LED walls;

• roof systems,

the purchase moves beyond individual straight sections and should be planned as a complete structure.

For buyers still comparing truss types, see Truss Buying Guide for Events: What Should You Buy First?.

Necessary Related Products

Straight Truss

For other straight truss sections:

Straight Truss

Truss & Rigging Accessories

For clamps, bolts, connection components and mounting accessories:

Truss & Rigging Accessories

Aluminum Truss Systems

For buyers comparing other truss structures and configurations:

Aluminum Truss

What is a plate-ended bolt truss?

It is a truss where each section ends with a rigid connection plate.

Adjacent truss sections are aligned plate-to-plate and connected using bolts instead of conical pins.

What size is this truss?

Approximately:

300 × 300mm / 12 × 12in

What is the main tube size?

Approximately:

50mm / 2in outside diameter

with a:

3mm wall thickness.

What is the diagonal tube size?

Approximately:

25mm / 1in

with a:

3mm wall thickness.

What lengths are available?

DragonEvent will offer standard lengths from:

0.5m to 2.5m

with custom lengths also available.

Can I order a special length?

Yes.

Send the required finished length and quantity for confirmation.

Is this a spigot truss?

No.

This product uses a plate-ended four-bolt connection system.

What is the bolt pattern?

The connection uses approximately:

171.5 × 171.5mm / 6.75 × 6.75in bolt centers

with approximately:

5/8in bolt holes.

Will it fit my existing 300mm bolt truss?

Possibly, but it must be checked.

Send:

end-plate photo + bolt-center measurement + hole diameter + overall truss dimensions

before ordering.

Are the connection bolts included?

They can be supplied according to the selected package.

Confirm whether you require:

truss only

or

truss + complete bolt connection set.

Can lights be mounted on the truss?

Yes, when the fixture, clamp, truss configuration and complete loading arrangement are appropriate.

Use clamps suitable for the actual 50mm main tube.

What is the load capacity?

There is no single universal figure for every length and span.

Load capacity depends on the complete setup, so technical data should be confirmed for the intended application before significant structural loading.