Polymer Concrete Vaults
Heavy-Duty Protection for Critical Systems
Our Polymer Concrete vaults are built to endure. Manufactured using a proprietary blend of polymers and aggregates, these enclosures offer exceptional strength, chemical resistance, and longevity in demanding environments.
Applications: Electrical distribution, fiber optics, broadband, CATV, and municipal infrastructure.
Features:
- Up to H-20 rating for high-load environments
- Corrosion & freeze/thaw resistant
- Buy American Act compliant
- Customizable Options: Conduit entries, cable racks, grounding kits
- Sizes Available: From 12″x12″ to 48″x96″x48″


FRP Underground Enclosures
Lightweight. Durable. Efficient.
Our FRP enclosures provide a lightweight alternative to traditional concrete, without compromising strength. Ideal for projects requiring fast installation and reduced labor costs, FRP vaults are stackable, crack-resistant, and built to perform.
Applications: Telecom, fiber, low-voltage electrical, and traffic signal systems.
Features:
- Tier 15
- Impact & crack Resistant
- Nestable for easy transport & storage
- Environmentally friendly: Made with recycled materials
Why Terra-Vaults?
- Made in the USA — Manufactured in Gainesville, TX, supporting American jobs and ensuring consistent product quality.
- Engineered for Longevity — Designed to last for decades in demanding underground environments, with resistance to corrosion, impact, and freeze/thaw cycles.
- Flexible Configurations — Available in multiple sizes with customizable accessories including conduit entries, cable racks, grounding kits, and stainless steel hardware.
- Trusted Nationwide — Serving contractors, municipalities, and utilities across the United States with reliable, Tier-rated handholes and vaults.
- RUS / ANSI / SCTE 77 Approved — Built to meet or exceed industry standards for safety, performance, and structural integrity.
- Buy American Act Compliant — Ideal for federally funded infrastructure projects and government contracts.
Have questions or need a quote?
Our team is ready to support your project with expert guidance and fast, reliable service.
Whether you’re planning a new installation or looking for product specifications, we’re here to help you find the right solution.