Description
The DU001 600x600x100mm D400 ductile iron solid top manhole cover is a premium heavy-duty access cover designed for carriageways, utility infrastructure, commercial developments and industrial environments where regular heavy vehicle traffic is expected. Manufactured from high-strength spheroidal graphite cast iron, it complies with BS EN124-2:2015, carries BSI Kitemark certification, and meets the requirements of CD534 for demanding infrastructure projects.
Featuring a 600mm x 600mm clear opening, 100mm deep frame, SmartGrip® anti-slip surface and three-point suspension system, the DU001 delivers outstanding stability, durability and long-term performance under repeated traffic loading.
One of the UK’s most commonly specified D400 manhole cover sizes, the DU001 is suitable for both new installations and replacement projects. It is commonly used where a replacement D400 manhole cover is required for existing utility chambers, carriageways and commercial developments. Compatible with many standard 600 × 600 chamber openings, we recommend checking the overall frame dimensions before ordering, as these can vary between manufacturers.
The DU001 is a popular choice for utility chambers, cable pits, carriageways, commercial developments and industrial sites, providing reliable access to underground services whilst withstanding demanding operating conditions.
Key Features
- D400 load rating tested to 400kN (40 tonnes)
- 600 x 600mm clear opening
- Heavy-duty 100mm frame
- Manufactured from high-strength ductile iron
- SmartGrip® anti-slip surface technology
- Three-point suspension for non-rock performance
- Black coated finish
- BSI Kitemark certified
- Manufactured to BS EN124-2:2015
- Complies with CD534, BS7903 and Manual for Contract Highway Works (Series 500)
- Optional locking, vented, badged and sealing plate versions available.
Typical Applications
- Carriageways
- Hard shoulders
- Utility chambers
- Cable pits
- Commercial developments
- Industrial estates
- Distribution centres
- Service yards
- Loading bays
- Forecourts
- Civil engineering projects
- Highway infrastructure
All manhole covers, gully covers, and frames are supplied through an external supplier. Delivery charges will be calculated in your cart at checkout. Due to the size and weight of these items, deliveries are typically made using an artic vehicle.
Returns are subject to a restocking fee and haulage which will be deducted from your refund.
Please review all product specifications before placing an order. If you require assistance selecting the correct product, our team is available on 03338803558Â or info@drainageandcivilsdirect.co.uk to provide professional guidance.
By completing your order, you acknowledge and accept these delivery and return terms.
- Product Code: DU001
- Load Rating: D400 (Group 4)
- Clear Opening: 600 x 600mm
- Overall Frame Size: 670 x 670mm
- Frame Depth: 100mm
- Material: Ductile Iron (Spheroidal Graphite Cast Iron)
- Surface Finish: Black Coated
- Surface Pattern: SmartGrip® Anti-Slip Technology
- Certification: BSI Kitemark
- Standard: BS EN124-2:2015
- Load Test: 400kN (40 Tonne)
- Suspension System: Three Point Suspension
- Complies With: CD534, BS7903 and Manual for Contract Highway Works (Series 500)
- Optional Extras: Locking, Vented, Badged and Sealing Plate versions available.
What size chamber does a 600×600 manhole cover fit?
The DU001 is designed for chambers with a 600mm x 600mm clear opening. Always measure the internal chamber opening rather than the external brickwork or surround to ensure the correct fit.
Will this replace my existing 600×600 D400 manhole cover?
In many cases, yes. However, manufacturers can have different overall frame dimensions despite having the same 600 x 600mm clear opening. We recommend checking both the clear opening and the overall frame size before ordering. If you’re unsure, contact our team and we’ll be happy to confirm compatibility.
Is this manhole cover suitable for carriageways?
Yes. The DU001 is manufactured to BS EN124-2:2015, carries BSI Kitemark certification, complies with the requirements of CD534, and is suitable for carriageways, hard shoulders and other areas subjected to regular heavy vehicle traffic. Always ensure the specification meets the requirements of your project or highway authority.
Can this manhole cover be used for utility chambers and cable pits?
Yes. The DU001 is suitable for utility chambers, cable pits, electrical infrastructure, telecom installations and commercial developments where a heavy-duty D400 access cover is required.
Is the DU001 compliant with BS EN124-2:2015?
Yes. The DU001 is manufactured in accordance with BS EN124-2:2015, carries BSI Kitemark certification, and meets the requirements of CD534, providing confidence in its performance for demanding infrastructure applications.
Can this manhole cover be supplied with locking or vented options?
Yes. The DU001 is available with optional locking, vented, badged and sealing plate configurations to suit different project requirements.
What happens if I order the wrong size?
Large manhole covers are subject to restocking and haulage charges if returned. If you’re unsure which cover you require, contact our team with your chamber dimensions before ordering and we’ll be happy to confirm the correct product.
How heavy is this cover?
The DU001 is a heavy-duty ductile iron manhole cover designed for demanding applications. Due to its weight, suitable lifting keys and safe manual handling procedures should always be used.
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