Concrete rings from Stanton Bonna are manufactured with tongue and groove joints to allow for jointing strips or cement mortar when installing. Stanton Bonna is one of the leading UK manufacturers of a range of concrete products, including culverts and manholes, so quality, durability and reliability is assured.
For use in storm water management, pipeline junctions, utilities connections and sewage applications, concrete manhole rings are a versatile product. This concrete manhole ring, also known as a concrete chamber ring, does not come with steps.
Please note: Concrete manhole rings must never be stored on their side, they must be stacked in chimney fashion.
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Question:
Hi Please can you let me know if the 900mm diameter measurement is internal or external . Many thanks.
Answer:
This is internal.
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