- Standard 24″ stackable manhole ring for the 400-24® series manhole covers or grate, or the the 380-24® ML.
- Stock item.
- 3″ cast iron riser rings available.
- Custom steel risers are available on special orders.
- H-20 traffic rated when properly installed in reinforced concrete and used with an H-20 traffic rated manhole cover or grate.
- Coated cast gray iron, ASTM A48 CL35B or better, AASHTO M306-10 (M105).
- Made In USA. LEED® certifications and specifications on coating available on request.
- Please use the Contact Form or call us to request info & submittal sheets.
- 1-800-258-2278 Toll Free or (972) 263-1360 DFW Local.