675x675x150 Ductile Iron Double Triangular Manhole Cover (DU084)

The DU084 675x675x150mm 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 675mm × 675mm clear opening, 150mm deep frame, large bedding flange, SmartGrip® anti-slip surface and three-point suspension system, the DU084 delivers outstanding stability, durability and long-term performance under repeated traffic loading. The increased bedding area helps reduce frame bearing pressure, making it particularly suitable for demanding carriageway and commercial installations.

The 675 × 675mm size is widely specified for both new installations and replacement projects across highways, commercial developments and utility infrastructure. It is commonly selected as a replacement D400 manhole cover for existing chamber openings, although overall frame dimensions can vary between manufacturers. We recommend checking both the clear opening and overall frame size before ordering to ensure compatibility.

Suitable for utility chambers, cable pits, carriageways, commercial developments and industrial sites, the DU084 provides reliable access to underground services whilst withstanding demanding operating conditions.

Key Features

• D400 load rating tested to 400kN (40 tonnes)
• 675 × 675mm clear opening
• Heavy-duty 150mm deep frame
• Increased bedding area with large flange design
• 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, BS7903:2020 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 (consumer cost), 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 03338803558  or info@drainageandcivilsdirect.co.uk to provide professional guidance.

By completing your order, you acknowledge and accept these delivery and return terms.

675x675x150mm D400 Ductile Iron Solid Top Manhole Cover DU084 Datasheet

What size chamber does a 675×675 manhole cover fit?

The DU084 is designed for chambers with a 675mm × 675mm 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 675×675 D400 manhole cover?

In many cases, yes. The DU084 is designed for a 675 × 675mm clear opening, making it suitable for many standard chamber openings used throughout the UK. However, manufacturers can have different overall frame dimensions, so we recommend checking both the clear opening and overall frame size before ordering. If you’re unsure, contact our team and we’ll be happy to confirm compatibility.

Why choose the 150mm deep frame version?

The DU084 features a 150mm deep frame with an increased bedding area, helping to reduce frame bearing pressure and improve installation stability. This makes it particularly suitable for demanding carriageway, highway and commercial applications.

Is this manhole cover suitable for carriageways?

Yes. The DU084 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 DU084 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 DU084 compliant with BS EN124-2:2015?

Yes. The DU084 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 DU084 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 DU084 is a heavy-duty ductile iron manhole cover designed for demanding applications. Due to its size and weight, suitable lifting keys, lifting equipment where appropriate, and safe manual handling procedures should always be followed.