Single-Bolt Manholes

Optimized for spaces that require relatively frequent inspection or maintenance without the time-consuming process of removing dozens of perimeter bolts. Utilizes a single, heavy-duty central bolt that compresses the entire cover uniformly via an internal strongback bar. Flush-Mount Only: Features a fully recessed central bolt cavity, maintaining a flat deck surface to eliminate tripping hazards. Best for: Storage lockers, dry voids, and inspection hatches requiring efficient, single-tool operation.