NCI manufactures precast manholes conforming to ASTM standards as well as ODOT and local municipality requirements. Our storm and sanitary manholes are produced in a controlled environment giving us the ability to provide you with a superior product for your infrastructure. We offer many options from coatings to water tight connections. We also stock a full line of frames and covers to complete your manhole.
Standard Manhole sizes: 48”Ø, 60”Ø, 72”Ø, 84”Ø, 96”Ø, and 120″Ø.
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