Carson® pedestrian-rated underground enclosure. Carson is Oldcastle Infrastructure’s economical, light-duty range of underground utility access enclosure products, providing engineers, utility service providers and contractors with an enclosure that ensures performance in pedestrian and greenbelt applications. Its lightweight high-density polyethylene (HDPE) design means that delivery, handling and installation are quick, simple and safe, while also enabling on-site modifications to be carried out quickly without the need for specialist tools. As part of Oldcastle Infrastructure’s multi-materials underground enclosures range, Carson is backed by the scale and optimized by the materials science expertise of America’s leading infrastructure solutions provider.