Kenbro 600x600mm Polymer Manhole Cover, Light-Medium Duty, Black

Kenbro 600x600mm Manhole Cover

The Kenbro 600x600mm Manhole Cover provides a high-strength, corrosion-resistant access solution for drainage and inspection chambers. Engineered from reinforced polymer composite, this unit handles light to medium traffic loads without the weight or theft-risk associated with traditional cast iron. It serves as a standard specification for residential driveways, commercial walkways, and municipal sewer access points requiring a 600mm clear opening.

Built for the Job

Plumbers and civil contractors select this composite unit for its durability in aggressive environments. Unlike metal alternatives, the material does not rust or degrade when exposed to sewer gases, moisture, or chemical runoff. The frame and lid design ensure a secure fit that prevents debris from entering the inspection chamber while allowing easy access for maintenance crews. Its weight-to-strength ratio simplifies handling during installation, reducing the need for heavy lifting equipment on tight job sites. The textured surface provides essential slip resistance for pedestrian safety in wet conditions.

• Installation over residential sewer inspection pits and grease traps.

• Access points for telecommunications and electrical underground ducting.

• Stormwater drainage systems in commercial parking areas and walkways.

Product Highlights

Corrosion Resistance

The composite resin construction is inert to hydrogen sulfide and other corrosive gases commonly found in wastewater systems.

Load Bearing Capacity

• Rated for B125 loading (12.5 tonnes) suitable for domestic vehicle traffic.
• Structural ribbing on the underside enhances rigidity under static and dynamic loads.

Security and Safety

• Non-metallic material holds zero scrap value, effectively eliminating the risk of site theft.
• Integrated anti-slip pattern maintains traction for foot traffic and light vehicles.

Technical Specifications

What’s Included

• 1 x 600mm x 600mm Polymer Lid

• 1 x Matching Polymer Support Frame

On-Site & Workshop Notes

• Bed the frame into a high-strength mortar or concrete haunch to ensure stability under load.

• Ensure the top surface sits flush with the surrounding pavement or soil to prevent trip hazards.

• This unit is specifically designed for B125 zones; do not use in areas subject to heavy commercial trucks or high-speed traffic.

• Clean the frame seat before final placement of the lid to ensure a rattle-free fit.