The covers in SSC’s Thrubeam lineup typically only weigh a quarter to a third as much as steel or concrete covers, thus simplifying installation and maintenance. SSC claims that combining its Thrubeam technology with a custom-grade Crestapol resin resulted in glass fiber reinforced plastic (GFRP) composite covers that are more than 20 percent lighter than other composite covers.

SSC’s covers are also inherently non-corrosive, non-conductive and avoid problems relating to theft for their scrap value, which is an issue with metal covers. SSC covers also include additional product features, such as secure locking systems, venting, watertight sealing and color coding.