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HERMEQ NorwayD400 Surface Box
Product Highlights
- Reinforced frame corners - Improves load distribution for extended surface life.
- Indexed cover system - Ensures precise alignment for safer and faster installation.
- PSRV-tested surface - Third-party verified for high grip and durability under pressure.
Alternative Products
SKU TC597344
This D400 surface box is purpose-built for major roads, carriageways, and areas subject to high-speed, high-volume traffic. Conforming to Highway D400 standards, it delivers secure surface infrastructure while offering robust resistance to structural fatigue and performance degradation.
The unit includes reinforced frame corners to maximise load transfer and reduce edge deterioration — a key factor for installations exposed to constant stress from commercial vehicles. Its indexed cover design offers added value by simplifying orientation during fitting and reducing installation errors on site.
To ensure surface integrity, the chequer plate design has been subjected to 70+ PSRV testing by a UKAS-accredited third-party laboratory. This means the product offers reliable grip and endurance, helping prevent tyre slippage and ensuring surface resilience in wet or high-friction scenarios.
- Complies with Highway D400 specifications - Ideal for fast-moving traffic and heavy-duty road use.
- Indexed cover mechanism - Speeds up alignment and prevents misfit during installation.
- High PSRV chequer pattern - Certified for safe traction under dynamic road conditions.
- Frame design enhances lifespan - Load-spreading geometry increases substrate stability.
- Reliable manhole cover replacement - Suitable where structural security is critical.
This surface box is more than just a fitting — it’s a heavy-duty manhole cover alternative for infrastructure projects demanding long-term resilience. The use of certified testing and intelligent engineering means contractors and local authorities can trust it for uninterrupted road safety and maintenance access.
HERMEQ stock a wide-range of Ground Mats, Bog Mats, Trench Covers & Road Plates conforming to all required safety specifications and regulations.
Need any help? Contact HERMEQ Today.
Contact our team via phone 0800 043 2520, email sales@hermeq.com or use our live chat feature between 8:00am & 17:00pm for help discovering our range.
- Designed for UK road infrastructure requiring compliant surface fittings
- Ideal for installation in carriageways, urban bypasses, and dual carriage routes
- Withstands high impact from HGVs and public transport traffic
- Surface tested to provide long-term grip and reduced maintenance frequency
Municipal and Highway Use: Deployed by local authorities on major roads, the D400 surface box ensures reliable access to underground services without compromising on road safety. Its indexable cover streamlines fitting and compliance checks for field teams.
Commercial Development & Road Expansion: For developers and contractors involved in logistics routes or commercial roadworks, surface boxes that resist cracking and deformation under repeated axle pressure are essential. This model offers verified PSRV grip and dimensional integrity.
Industrial Transport Routes: In areas where forklifts, articulated lorries, or machinery cross paved surfaces, a durable manhole cover replacement is critical. This surface box prevents collapse and wear at high-stress junctions or depot entrances.
Urban Traffic Management: With cities requiring street furniture that meets modern compliance and safety benchmarks, this model’s reinforced build and low-profile fit reduce road disruption while increasing inspection efficiency.
Performance Assurance: Unlike generic castings, this unit has been independently tested and certified — meaning fewer repairs, longer life, and better risk mitigation for project managers and civil engineers alike.
Is this surface box suitable for motorways and dual carriageways?
Yes, it is designed for high-speed and high-traffic roads, fully compliant with D400 highway standards.
How does the indexed cover improve installation?
It aligns automatically for a perfect fit, reducing time and risk during installation and minimising errors on-site.
What testing has this product undergone?
It has been PSRV tested (70+) by a UKAS-accredited lab to ensure its surface pattern offers traction and safety.
Can it replace a standard manhole cover?
Yes, it is a reinforced alternative built for demanding road environments where additional durability is required.
