300-24® Stackable Manhole Ring

The standard 300-24® 24″ stackable cast iron manhole ring is designed for the 300-24® series covers or grate, offering strength and versatility. H-20 traffic rated when properly installed in reinforced concrete and paired with an H-20 rated cover or grate, it ensures reliable performance. Stock options include 2-1/2″, 4″, and 6″ cast iron riser rings, with custom steel risers available for special orders. Made from uncoated cast gray iron that meets ASTM A48 CL35B or better and AASHTO M306-10 (M105) standards, this product is proudly made in the USA, delivering durability and compliance for infrastructure projects.

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.