300-24® 2.5X Manhole Riser Ring

300-24® 2.5x standard cast iron 2-1/2″ tall riser ring is designed for the 300-24® series manholes and is a stock item, ensuring quick availability. Made from uncoated ASTM A48 Gray Iron CL35B or better and compliant with AASHTO standards, this riser ring is H-20 traffic rated when paired with an H-20 traffic rated ring, cover, or grate properly installed in reinforced concrete. While standard-size steel riser rings are readily available as stock items, other sizes and styles can be ordered for special requirements, offering flexibility for various applications.

Contact Bass & Hays or call us at 1-800-258-2278 toll free or 972-263-1360 DFW Metro. Check stock, request technical data, drawings, submittals, BABA, AIS or LEED  documentations and certifications, or to place orders.