Lightweight Shields. Robust Protection
Our large trench shields are engineered to offer substantial length without excessive weight, making them easier to transport, install and reposition on site.Protection in Action
Lightweight Design
Made from high-grade aluminium, these shields are lighter than steel alternatives, which makes them easier to transport and assemble. This is especially important for projects with weight restrictions, allowing smaller, more cost-effective machines to move the shields, reducing fuel and machine hire costs.High Load Rating
These shields are designed to be lightweight while maintaining a higher kPa rating than many shields of similar size. They provide robust protection against soil pressure, helping protect workers in the trench in different soil conditions and keeping your site compliant.Extended Length
Ideal for longer trenching projects, reducing the need for frequent repositioning and helping crews work faster while maintaining continuous trench protection.Adjustable Strut Sizes
Offers versatility to match different trench widths, allowing you to save money by using the same shield in multiple different-width trenches.Under Strut Clearance
Facilitates unobstructed access for personnel and equipment like pipes, streamlining operations within the trench and allowing you to lay different diameter pipes while also protecting your team. Standard strut clearance is 1.3m and we have specific struts to suit even higher strut clearance.Large Shield Range
| Product Code | Panel Length | Panel Height | Panel Thickness | Weight Per Set | kPa Rating | Under Strut Clearance |
|---|---|---|---|---|---|---|
| 2375 | 3.6m | 2.4m | 90mm | 980kg | 43kPa | 1.35m |
| 2376 | 3.6m | 1.05m | 90mm | 510kg | 43kPa | 0.47m |
| 2395 | 5.0m | 2.4m | 150mm | 1630kg | 55kPa | 1.35m |
| 2396 | 5.0m | 1.5m | 150mm | 1200kg | 55kPa | 0.55m |
| 2398 | 7.2m | 2.4m | 150mm | 2150kg | 36kPa | 1.35m |
| 2399 | 7.2m | 1.5m | 150mm | 1800kg | 36kPa | 0.55m |
Applications
Utility installations, drainage projects, pipeline work, sites with space restrictions, civil construction excavations, and public maintenance.Product Videos
- This video answers the most common FAQs about large aluminium trench shields
- Watch How to make a large aluminium trench shield video
- How why you should inspect trench shields
Become a Trench Shield Expert
- Our Top 4 Large Trench Shields for 2026
- Aluminium Trench Shield Strength and Certifications!
- Our Aluminium Trench Shields VS Steel Trench Shields
- How & Why You Should Inspect Your Trench Shields
- Trench configuration – the right solutions keep people safe
- Modular Boxes vs Trench Shields: Which is Right for Your Job Site?
- What affects the cost of hiring a shield?
- Different Ways To Make Trenches Safe!
Certified to International Standards
This trench box meets British and European Standards BS EN 13331.1 and 13331.2, Australian and New Zealand Standard AS 4744.1-2000, and United States Standard OSHA Sub Part P. These certifications attest to its quality and reliability, ensuring compliance with safety regulations across various regions.Large Shield Accessories
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Rigid Strut
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Adjustable Strut
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Vertical Extension Joiner
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Manhole Corner Bracket
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Zinc Plated 'R' Clip
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Hardened Pin & Clip
Note: 2346 is for fixing struts to the shields while 2347 is for locking pin for the adjustable struts. |
Why choose Guardian trench shields?
Lightweight without compromise
Complete shield setup. Small excavators can lift and position shields using inbuilt lifting points. This cuts machinery costs and makes shields accessible for restricted sites.
Built for New Zealand conditions
Aluminium doesn’t rust. In wet, muddy trench work, that longevity matters. Our shields handle New Zealand’s diverse soil types — from sandy coastal ground to heavy clay — without the corrosion issues affecting steel alternatives.
Flexible for real work
Most shields have multiple strut points, meaning you’re not locked into one position when services are in the way. We have many different-sized struts, including adjustable struts to accommodate different trench widths.
Fast to deploy and move
Shields can be assembled or dismantled in minutes. Move quickly around busy sites or transport between jobs without specialised equipment.
Compliance and certification
Every Guardian shield meets or exceeds at least one of the following standards:
- New Zealand: AS 4744.1-2000
- Australia: AS 4744.1-2000
- United States: OSHA Sub Part P
- Britain & Europe: BS EN 13331.1 and 13331.2
Each shield carries an identification plate showing standards compliance. Certifications and Safe Use Manuals provided to support Health & Safety requirements and WorkSafe inspections. Reference guides on every shield show safe strut positioning.
Technical support
We understand site pressures. Projects run tight, ground conditions change, and you’re responsible for getting people home safe. We provide:
- On-site product demonstrations
- Crew training on proper installation and use
- Technical compliance advice
- Documentation for WorkSafe requirements
- Custom sizing for non-standard requirements
What do you need?
Whether you’re looking for a specific solution or an ongoing safety partner, we’re ready to talk.