ThruBeam® FRP Manhole Covers
Safer, smarter underground access for critical utility and infrastructure systems.
- Single-Person Lift Design
- AASHTO Rated Performance
- RF Transparent Construction
- Dip Cap Option Available
- Pressure Release Locking Mechanism (PRLM)
- Industry-leading vented composite manhole cover designs
ThruBeam® FRP manhole covers and frames provide a lightweight yet high‑strength alternative to traditional materials, engineered to improve safety, performance, and long‑term reliability. Designed for single‑person handling, these composite covers reduce the risk of manual handling while delivering AASHTO‑rated load performance. RF‑transparent by design, ThruBeam covers support uninterrupted wireless communication for modern utility networks, while corrosion‑resistant construction ensures reliable performance in aggressive and coastal environments.
With a 30+ year maintenance‑free lifecycle and zero scrap value, ThruBeam significantly reduces theft risk, ongoing maintenance, and total cost of ownership. ThruBeam also offers industry‑leading vented composite manhole cover designs that support airflow and pressure management in sensitive applications, along with options such as dip caps, watertight seals, pressure‑release locking mechanisms (PRLM), and custom branding.