The StormRax™ pyramid series is designed for installation on round concrete, metal, or plastic risers larger than a 60” Inside Diameter that require trash racks for debris screening. The fiberglass reinforced structural High Density Polyethylene (HDPE) construction is engineered to endure the harshest of environments and ensures your stormwater system is ready when Mother Nature is at it’s worst. More detailed information on our most common models and downloadable drawings are available below. For Round Structures with a 60” I.D. or smaller, our Round Series has a solution for your project.