Built for the jobsite, our cast iron manhole components are ready to handle heavy traffic, rough conditions, and daily wear. Whether you're working on stormwater systems, sewer lines, or commercial sitework, these frames, grates, and covers are made to meet spec and stay tough. All components meet ASTM standards, please contact us for more information.
Note: Weights, dimensions, and images/drawings are provided for guidance only. Specifications are subject to change without prior notice.
📄Manhole Details Document
Frame
3" Cast Iron Manhole Frame
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Made from Gray Iron (CL35B)
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Heavy Duty design load
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No open area (solid frame)
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Undipped coating
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Machined surface
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Certified to ASTM A48
Grate
24" Cast Iron Manhole Grate
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Made from Gray Iron (CL35)
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Heavy Duty design load
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182 sq. in. open area for water drainage
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Undipped coating
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Machined surface
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Certified to ASTM A48
Cover
24" Cast Iron Manhole Solid Cover
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Made from Gray Iron (CL35B)
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Heavy Duty design load
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Solid, non-vented with 182 sq. in. open area
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Undipped coating
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Machined surface
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Certified to ASTM A48 standards