Manhole Box Upper Extension – Alloy (without Knife Edge)
Product Description
Need to extend your open manhole box depth without adding unnecessary weight?
The ASC Manhole Box – Upper Extension – Without Knife Edge (Alloy) is a practical, lightweight solution for increasing trench shield height. Built for use with ASC’s lower manhole box panels, this modular extension offers vertical trench protection in projects where lifting limits and tight access demand lighter equipment.
Available Size Options
This product is available in multiple size options. Choose from:
- Height × Length (mm): Fixed-size panels (Select from the dropdown)
- Width (mm) – Fixed Strut: Selectable trench widths from outer panel face to outer panel face (Select from the dropdown)
Key Features
- Lightweight Alloy Construction: Easier to lift, align, and install using smaller machinery
- No Knife Edge: Enables faster stacking and simplified alignment
- Modular System: Compatible with ASC Lower Extensions to achieve deeper trench shielding
- Certified Safe: Compliant with Australian trench safety standards and rated to 136kPa
- QR Tracked: Tagged for site safety compliance and equipment management
Specifications
- Material: Aluminium Alloy
- Max Panel Pressure: 136kPa
- System: Stackable upper extension for ASC Alloy Manhole Boxes
Applications
- Extending trench depth for stormwater or sewer access chambers
- Trenching in residential or confined urban sites
- Utility vault installations requiring flexible depth shielding
- Mobile works or reactive jobs needing quick vertical coverage
Why Choose This Model?
This upper panel removes weight and complexity from your trenching system. Without a knife edge, stacking is streamlined, making this model ideal for teams seeking speed, ease of use, and full compliance in lightweight configurations.
Need Something Custom?
We offer tailored builds with modified heights, additional lifting points, or extra reinforcement. Let us build what your site demands.
View the Manhole Box – Lower Extension – Without Knife Edge (Alloy) to complete your setup.
Check the Safe Work Australia Model Code of Practice: Excavation work for regulatory compliance.