20″x 2″ risers are a great solution for systems needing only a few inches to come to grade.

  • Allows tank, riser, and tank lid to be poured together
  • Accepts additional 20” Risers to bring to grade for servicing
  • Patented ring to guarantee watertight and airtight seal between concrete tank and riser
  • Fits anywhere in the Riser stack
  • Can be used as a 2″ Riser