Sanitary and Storm Manholes

Precast concrete manholes with DOT approved and NPCA and PCI certifications.

Reliable Precast Concrete Manholes by Mack Industries

When it comes to precast concrete manholes, Mack Industries is a respected provider renowned for exceptional quality and dedicated service. Our products, celebrated for excellent value, are the cornerstone of infrastructural projects.

Our expertise in precast manholes extends to both sanitary and storm-related applications. With an unwavering commitment to quality, our fast delivery is rooted in our expansive production capabilities, ensuring we meet your project timelines efficiently.

In our controlled production environment, we meticulously eliminate the quality variables often present on-site. This process guarantees uniform, high-caliber products – every time. Our team’s industry knowledge coupled with engineering acumen ensures that our precast manholes are not only structurally sound but cost-effective.

Mack Industries provides local solutions to your utility manhole needs, backed by our total quality commitment and customer-focused service.


large manholes

Comprehensive Precast Manholes Assortment

Mack Industries’ precast manholes are rigorously manufactured to meet ASTM C-478 standards, with options ranging from 48″ to 96″ in diameter to suit diverse utility infrastructure needs. Our exhaustive inventory includes vital components such as headwalls and drainage inlet structures, ensuring we are your one-stop manhole manufacturer.

Key Features of Mack Precast Manholes:

  • Uniformly constructed inverts across all sizes.
  • Ensured watertight connections in compliance with ASTM C-923.
  • Multiple sealing options including Kor-n-Seal, A-Lok, or Z-Lok.
  • Safety steps: Robust steel reinforced polypropylene embedded steps adhering to ASTM D-41-1082.
  • Seals: Flexible rubber gasket conforming to ASTM C-443 with a butyl resin alternative.
  • Application of reliable waterproof coatings for longevity.
  • Innovative design with precast external drops.
  • The press seal lift system facilitates easy and secure handling.

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