Del Zotto Products Manufactures Reinforced 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.