Trade Grade 24″ x 18″ Cast Iron Manhole Cover, Medium Duty

24″ x 18″ Cast Iron Manhole Cover

The Trade Grade 24″ x 18″ Cast Iron Manhole Cover provides a durable access solution for drainage systems and inspection chambers in residential or light commercial environments. This medium-duty component features a high-density grey iron construction designed to withstand intermittent vehicle traffic. It ensures secure coverage for subsurface utility networks while maintaining site safety through its textured surface.

Built for the Job

This drainage hardware is engineered for longevity in outdoor installations where environmental exposure is constant. The casting undergoes a bitumen coating process to provide a layer of corrosion resistance against groundwater and atmospheric moisture. Site supervisors often specify this size for standard masonry inspection chambers because the clear opening dimensions align with common blockwork layouts. The weight of the unit ensures it remains seated within the frame under vibration, preventing rattling or displacement during use.

• Installation over residential sewer and rainwater inspection pits.

• Access points for telecommunications or electrical ducting runs.

• Placement in domestic driveways and pedestrian footpaths.

Product Highlights

Load Classification

The unit is rated for medium-duty applications, typically supporting up to 5 tonnes of slow-moving wheel load.

Surface Engineering

• Raised anti-slip pattern improves traction for pedestrians in wet conditions.
• Precision-machined seating surfaces minimize lateral movement within the frame.

Technical Specifications

What’s Included

• 1 x Cast Iron Cover Plate

• 1 x Matching Cast Iron Outer Frame

On-Site & Workshop Notes

• Ensure the frame is fully bedded in a high-strength mortar mix to prevent point-loading stress on the casting.

• Verify that the clear opening matches the internal dimensions of the chamber to allow unobstructed access for maintenance tools.

• Regularly clear debris from the seating flange to maintain a flush fit and prevent rocking under load.