Manhole Grade Adjustment Rings
Manhole Grade Adjustment Rings
We have over 70 years of experience in manufacturing rings for all types of applications.
We offer rectangular, square, and round rings in a variety of sizes. For your grade ring needs, please call today.
Rectangular and Square(Inside Dimensions)
- 20” by 26” (type A) (2" thick)
- 25” by 25” (type B) (2"and 4" thick)
- 21” by 24” (2" thick)
- 24” by 36” (2", 4", and 6" thick)
Round(Inside Diameter)
- 26” (2"and 4" thick)
- 28” (1", 2", and 4" thick)
- 30” (1", 2", and 4" thick)
- 36” (2", 4", 8" thick)
- 36" w/Epoxy Coated Reinforcing Rebar(2", 4" thick)
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