600 x 450mm Ductile Iron Manhole Cover and Frame B125

This 600 x 450mm ductile iron manhole cover and frame is a solid top slide-out B125 rated access cover designed for domestic and light commercial chamber openings. It is regularly used on private driveways, paved paths, pedestrian areas, forecourts and service access points where a robust visible lid is the practical choice.

The solid top lid remains exposed at finished surface level, allowing quick future access without lifting paving blocks, slabs or surrounding finishes. Where appearance is secondary to strength, security and routine maintenance access, this type of cover is widely specified.

Manufactured from spheroidal graphite ductile iron, the CD 762 KMB offers stronger impact resistance and improved structural performance compared with older grey cast iron covers. Correctly bedded on a full mortar or concrete surround, it is well suited to repeated car traffic and day to day pedestrian loading.

The 600 x 450mm clear opening is one of the most common chamber sizes used for drainage inspection points and utility access. It is often selected as a direct replacement size where an existing cover has failed or where chamber access needs upgrading from lighter duty products.

This model uses a slide-out lid design to reduce awkward manual handling during opening. Integral lifting key holes are included, while the unique corner design helps the cover seat correctly back into the frame after access.

B125 loading is intended for BS EN 124 Group 2 applications including driveways, pavements and private areas with occasional vehicle traffic. It should not be used in highways, delivery yards or regularly trafficked heavy vehicle areas where D400 or above would normally be required.

Always measure the chamber clear opening first, then confirm overall frame size and bedding depth before ordering a replacement.

B125 rated for driveways, pavements and pedestrian areas

600 x 450mm clear opening, a common replacement size

Solid top slide-out lid for easier maintenance access

Integral lifting key holes for controlled removal

Unique corner design aids correct lid orientation

Ductile iron construction for strength and long service life

Polished skid resistance value 45+

Complete cover and frame supplied

Manufactured from spheroidal graphite iron grade EN-GJS-500-7 to BS EN 1563:2011. This ductile iron grade combines high strength with improved flexibility and impact resistance, helping reduce brittle failure under load.

Product code: CD 762 KMB
Clear opening: 600mm x 450mm
Overall frame size: 662mm x 512mm
Frame depth: 40mm
Product weight: 26kg
Cover weight: 19.5kg
Material: EN-GJS-500-7 ductile iron
Load class: B125
Standard: BS EN 124-2:2015
Frame pressure bearing area: 2.7 N/mm²
Polished skid resistance value: 45+
Cover type: Solid top slide-out cover and frame
Finish: Black surface coating
Application: Pedestrian and driveway