Manhole Systems, Inc. - Riser Specialists
Technical Information
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Technical information about riser rings
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Valve Box Riser RingMonument Box Riser


 Valve Box Risers:

  • 1/2" A36 HR steel inner ring
  • 1/8" A569 CR steel outer ring
  • Our custom manufacturing process allows the production of risers for most size valve and monument box covers
  • See measuring instructions below

 Monument Box Risers:

  • 3/4" A36 HR steel inner bar
  • 1/8" A569 CR steel outer strip



How to Measure diagram

Three (3) measurements are needed when ordering:

  1. Length and width, or diameter, of the cover
  2. Thickness of the lid
  3. Height of the vertical adjustment




Manhole Systems, Inc.
P.O. Box 278
Richmond, OH 43944

Phone: 1-800-433-3995
Fax: 1-740-266-5103

Copyright © 2007
Manhole Systems, Inc.