PBSL Group Clark-Drain Polypropylene Square Manhole Cover And Frame - 380mm

Name: PBSL Group Clark-Drain Polypropylene Square Manhole Cover And Frame - 380mm
Brand: PBSL Group
SKU: dpr4foeu4d
Availability: InStock

This 380mm square solid-top manhole cover and frame is engineered from high-quality AP9 grade poly...

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Product Information

Full details

This 380mm square manhole cover and frame set is designed for homeowners, landscapers, and contractors seeking a durable, lightweight solution for domestic drainage access. Ideal for use in pedestrian areas and private driveways, this high-quality AP9 grade polypropylene unit provides a reliable 3.5-tonne load rating, though it is not intended for heavy commercial vehicle traffic. Its primary benefit lies in the simple, integrated design that ensures a precise fit for mini inspection chambers while resisting the corrosion associated with traditional cast iron alternatives.

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Brand	PBSL Group

Extended Product Information

FAQs

Can this cover be used for a public road?

No, this product is designed for domestic driveways and pedestrian areas only and is not rated for public highway traffic.

Does the set include the keys needed to open it?

Yes, the package includes two integral keys specifically designed for the locking mechanism.

What size inspection chambers does this fit?

The stepped connection rings allow this frame to fit mini inspection chambers between 220mm and 300mm in diameter.

Can I use this cover with my existing metal frame?

No, you must always install the replacement cover with the corresponding frame provided to ensure safety and structural integrity.

What is the weight limit of this cover?

This cover is rated for a maximum load of 3.5 tonnes.

Is the material resistant to rust?

Yes, because it is manufactured from AP9 grade polypropylene, it will not rust or corrode like ductile iron.

Troubleshooting

Cover does not sit flush with the ground

Verify that the inspection chamber riser is level and that no debris is trapped between the chamber and the frame base.

Locking screws are difficult to turn

Clean the screw threads and locking mechanism with water to remove grit, then apply a small amount of lubricant if necessary.

Cover feels loose inside the frame

Check that the frame is properly seated on the chamber and that all four locking screws are tightened securely.

Pros and Cons

Pros

Significantly lighter than cast ductile iron covers
Corrosion-resistant material suitable for outdoor weather
Easy to install on standard mini inspection chambers
Includes essential security hardware
Professional aesthetic for driveways and landscaping

Cons

Limited to a 3.5-tonne load capacity
Not suitable for heavy-duty road traffic
Requires using the provided frame for a correct fit
Plastic construction may show signs of UV aging over long periods

Setup, Compatibility & Care

Installation is straightforward: ensure the inspection chamber is level and clear of debris before seating the frame onto the top riser ring. The stepped connection rings facilitate a firm grip on chambers between 220mm and 300mm. Once the frame is positioned, secure it according to site-specific bedding requirements. For maintenance, use the provided integral keys to unlock the screws and lift the cover. Periodically remove debris from the locking points to ensure smooth operation. Never mix the cover with different frame models, as this may compromise the load rating and structural integrity of the unit.