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WHY US

Built by infrastructure operators

Designed by people who have lived the realities of fiber deployment and know how to
fix supply chain failure

On schedule,
by design

Tier 22 and Tier 3 vaults engineered for maximum fiber density

25% more usable
capacity

True internal space that future-proofs networks and reduces costly rework

Compliant, Tested,
Trusted

BABA-compliant, load-tested, and engineered for long-term reliability.

Built by network operators

American-made products with reliable lead times when schedules matter most.


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Products

Engineered for the work ahead

To help you deploy faster and build with confidence.


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SUBTERRA SERIES

Handhole

Our flagship handhole family, engineered for maximum strength and expanded internal capacity in the most demanding roadway and high-load environments.

  • Exceeds ANSI/SCTE 77 Tier 22 for roadway and high-load builds

  • More usable internal space for slack, splices and future growth

  • Lightweight HDPE with a glass-filled lid for faster, safer installs

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SUBTERRA SERIES

Conduit

American-made, BABA-compliant fiber conduit engineered for fast, reliable last-mile and route builds.

  • Long continuous reels, so fewer joints and faster pulls
  • SDR-11 HDPE built to take repeated cable pulls without failing
  • American-made and BABA compliant, with dependable lead times
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SUBTERRA SERIES

Flower Pots

A pedestrian-rated pull box with a spacious workspace for storing slack and larger splice cases, ready for the FTTH connections still to come.

  • Roomy workspace for slack storage and larger splice cases
  • Pedestrian-rated, right-sized without paying for Tier 22
  • Built to carry future FTTH connections as the build grows
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SUBTERRA SERIES

Pedestal

A mid-tier enclosure that balances size and strength for mixed infrastructure builds.

  • Mid-tier strength sized for mixed infrastructure needs
  • Internal ribbing that handles ground stress
  • Sealed HDPE build with no ongoing maintenance
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SUBTERRA SERIES

Accessories

The cable management, locking, locating and branding options that turn a Subterra enclosure into a finished, field-ready install.

  • Cable management and locking options to secure equipment

  • Locating pucks and markings for fast field identification
  • Bolt kits and spares matched to your Subterra handholes
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Solutions

Built for your network

Regional ISPs

Cost-per-passing, BEAD deadlines,
deployment speed

Network contractors

Crew productivity, lightweight install,
no delays

Data Centers

Mission-critical Reliability,
Capacity, The platform ahead


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Proven

Built to last, proven
to perform

Every handhole meets or exceeds industry standards. Norvant products are tested for durability, load capacity, and environmental resistance. Our manufacturing process ensures consistency and reliability across every unit shipped from our Michigan facility.

One proof strip

Published 2 to 3 week lead times

True internal space that future-proofs networks

Lightweight HDPE reduces labor

25% more
capacity

Lower cost-per-passing

Michigan-made

RUS approved,
BABA compliant.

Engineered for long-term reliability


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Certifications

BABA compliance for every BEAD-funded project
+ certification badges.


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Certifications

BABA compliance for every BEAD-funded project
+ certification badges.


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Products

Handholes

HDPE fiber network handholes engineered for performance


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SUBTERRA MAX SERIES

Tier 3


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SUBTERRA MAX SERIES

Tier 15


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SUBTERRA MAX SERIES

Tier 22


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Get a Quote

Ready to
build faster

Get a quote or schedule a call with our team today


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FAQ

Find answers to common questions

Six questions on problem-solving, tiers, BABA, cost, documentation, engineering support.

Need more help?

Our team is ready to answer
technical questions

What problems do Norvant HDPE handholes and vaults solve in fiber and smart infrastructure builds?

Norvant enclosures are designed to remove common sources of delay and rework in outside plant deployments: heavy, hard-to-handle legacy enclosures, tight internal working space, installation inefficiency, and supply risk. Our lightweight HDPE and composite designs help crews install faster and safer, while providing generous internal capacity for today’s fiber density and future expansion. The result is a smoother build, fewer field complications, and a lower total installed cost.

“Tiers” refer to load-rating classes used for underground handholes and vaults in telecom applications.

  • Tier 3: Typically used in pedestrian and light-duty environments.
  • Tier 15: Commonly used in higher-demand mixed environments where additional strength is required.
  • Tier 22: Used in heavy-duty environments, including roadway and high-load applications.

To choose the right tier, start with the site conditions and load requirements in your standards or project specs, then match the enclosure rating accordingly. You can talk to our engineering team to confirm compliance and fit.

Yes. Norvant products are positioned to support Buy America requirements, making them a strong fit for BEAD-funded and other federally funded broadband deployments where domestic content and compliance documentation matter. If your approval process requires vendor onboarding or submittal paperwork, Norvant can support those needs so projects can move forward without compliance-related delays.

  • Installed cost is driven by labor, handling, scheduling, and the risk of rework, not only the purchase price of the enclosure. Norvant helps lower total installed cost by focusing on field realities:
    • Lightweight construction that makes handling and placement easier for crews.
    • True internal capacity that supports higher fiber density, cleaner cable management, and future growth.
    • Installation-friendly design that helps reduce common jobsite friction and avoidable revisits.
  • When the enclosure is easier to deploy and supports growth without replacement, teams protect their schedule, reduce labour overhead, and improve cost-per-passing outcomes.

Norvant supports typical engineering and procurement workflows with practical, submittal-ready information and configuration flexibility. Depending on the product line, this can include:

  • Technical spec sheets (dimensions, materials, weights, and product features)
  • Load-rating information aligned to tier requirements
  • Compliance support for projects requiring domestic content documentation
  • Options and accessories such as multiple colors, labeling or branding options, and cable management features where applicable.

If you need help selecting the right enclosure for a specific application, Norvant can align engineering requirements, procurement criteria, and build constraints to streamline approvals and keep projects moving.

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