Del Zotto Products Manufactures Reinforced precast concrete grade adjusting rings designed to raise your manhole cover to grade level. We also offer an H-20 traffic rated concrete adjusting ring when used with an H-20 traffic rated manhole ring.
Standard Sizes
- 24” Diameter, 32” Diameter
- 2” Thickness, 3” Thickness, 6” Thickness
Contact us for special orders for non-standard sizes of concrete rings for manholes.
