Bass & Hays offers a standard 3-inch tall cast iron riser ring designed to fit our 400-24® and 380-24R® manholes. Proudly made in the USA from durable, uncoated ASTM A48 Gray Iron, this stock item ensures quick delivery for your project needs. It is H-20 traffic rated when properly installed with a corresponding traffic-rated ring and cover in reinforced concrete, providing a reliable and robust solution. For projects requiring different dimensions, standard-sized steel riser rings are also available as stock items, with other sizes available by special order. Contact Bass & Hays or call us today Toll Free 1-800-258-2278 -or- 972-263-1360 DFW Metro to check stock, request drawings or submittals, BABA, AIS or LEED certifications, or place orders.
