Cretex Pro-Ring Manhole Riser

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Pro-Ring manhole and catch basin grade adjustment system is manufactured from Expanded Polypropylene (EPP) which is renowned for its strength to weight ratio, durability, chemical resistance and long service life under harsh conditions.

  • Available in round, square and rectangular shapes
  • One person can install in minutes
  • Install to within 1/4-inch of finished grade
  • Watertight
  • Eliminates hazard of concrete rings breaking, reducing injury risk
  • Speeds manhole installation and repair time


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