Heavy raffic rated covers will support up to 32,000 lbs/axle load, which is an AASHTO H20 rating. Concrete covers utilize threaded inserts for machine assisted lifting. Many other sizes and traffic ratings are available.
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CompareHeavy raffic rated covers will support up to 32,000 lbs/axle load, which is an AASHTO H20 rating. Concrete covers utilize threaded inserts for machine assisted lifting. Many other sizes and traffic ratings are available.
Reference Material



Polymer concrete boxes are a trusted solution for underground enclosures across telecommunications, electrical, water, and utility infrastructure. Engineered from a blend of polymer resins and mineral aggregates, these enclosures deliver exceptional strength, chemical resistance, and long-term durability—outperforming traditional concrete in many demanding environments. Whether used as splice boxes, handholes, or junction enclosures, polymer concrete vaults offer a lightweight yet robust alternative that simplifies installation while providing superior performance.

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