Fiberglass and Polymer Concrete Enclosures Engineered for Telecommunications, Electrical, and Utility Applications

Build America Buy America / Broadband Equity, Access & Deployment Compliant Underground Enclosures
  • Available in T15 & T22 - Designed to meet H20 criteria
  • Lockjaw Theft Deterent System
  • QuickShip from CA & TN Facilities
USA

Trusted by Utilities & Municipalities Since 1941

For over 80 years, NewBasis has been the trusted choice for telecommunications providers, electrical utilities, municipalities, and DOT agencies across America. Our products protect critical infrastructure for CATV, water, traffic, lightning, and industrial applications.
PGE The New Jersey Department of Transportation Ferguson Colorado Lumen

Find the Right Enclosure for Your Project

Fiberglass and polymer concrete enclosures engineered for telecom, electrical, and utility applications.
From underground vaults and pull boxes to equipment pads and theft-deterent systems.

Fiberglass (FCA)

Our fiberglass underground enclosures are lightweight and corrosion-resistant, making them easy to handle and built to withstand harsh environments. Ideal for telecom handholes and utility applications where weight and long-term durability matter.

Polymer (PCA)

Polymer concrete enclosures deliver maximum strength with fiberglass-wrapped sides and rings for added durability. These traffic-rated utility vaults resist impact, corrosion, and UV damage in demanding installations.

Monolith (MCA)

One-piece monolithic enclosures eliminate seams and weak points for a stronger, watertight underground vault, all while delivering a T22 load rating performance. Simplified installation with fewer components makes these pull boxes faster to deploy on the job site.

Box Pads & Pedestal Covers

Composite equipment pads provide stable, level mounting surfaces for transformers, switches, and above-ground utility equipment. Designed to protect critical infrastructure while providing easy service access.

LockJaw

Our theft-deterrent locking system keeps copper thieves out of your underground enclosures. Tamper-resistant mechanisms protect your infrastructure investment without complicating maintenance access.

Accessories

Everything you need to complete your underground enclosure installation, from mounting hardware to support brackets. Designed to work seamlessly with NewBasis products for faster, easier projects.
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BEAD Program Compliant Fiber Handholes, Vaults & Pull Boxes

The $42 billion Broadband Equity, Access & Deployment program demands strict Buy America compliance for every fiber handhole, vault, and pull box on your project. One non-compliant enclosure discovered during a federal audit can halt construction and jeopardize your grant funding.

Why BEAD Participants Trust NewBasis

NewBasis manufactures BABA compliant fiber optic handholes, polymer concrete vaults, and traffic rated pull boxes entirely at our facilities in Riverside, CA and Lebanon, TN. Every underground enclosure ships with full traceability documentation and certified compliance letters available upon request — so your BEAD project stays funded, on schedule, and audit-ready.

Compliance Documentation on Demand

BABA self-certification letters confirming domestic manufacturing and 55% domestic content, ready when auditors come calling.

Three Material Options, One Supplier

BABA self-certification letters confirming domestic manufacturing and 55% domestic content, ready when auditors come calling.

QuickShip™ Expedited Delivery

Popular sizes ship fast so you meet aggressive state deployment deadlines.

Download BEAD Product Catalog
Includes Compliance Letter - No Obligation

Built Different. Engineered Better.

We manufacture BABA-compliant fiberglass and polymer concrete underground enclosures for telecommunications, electrical, CATV, water, traffic, and industrial infrastructure. From handholes and pull boxes to utility vaults and equipment pads—engineered in America to aerospace standards.

Infrastructure That Fails Is Infrastructure That Costs You

When underground enclosures crack, corrode, or get targeted by copper thieves, you're stuck dealing with service outages, emergency repairs, and frustrated customers. Whether you're installing telecom handholes, utility vaults, or pull boxes, inferior materials mean shorter lifespans and higher long-term costs. For BEAD-funded projects, choosing the wrong supplier can cost you your funding eligibility entirely. Your infrastructure deserves composite enclosures built to last decades, not just pass inspection.

Engineered in America to the Highest Standards

NewBasis doesn't just manufacture underground enclosures. We engineer fiberglass and polymer concrete solutions using the industry's largest selection of advanced composites, including our proprietary PCX design that's stronger and lighter than standard polymer concrete.

Get Your Quote Today

Whether you need a single enclosure or a high-volume order for a major infrastructure project,
our team is ready to help. Request a quote online or call us directly at (951) 787-0600.