Infra-Riser multipurpose rubber-composite adjustment risers enable the cast-iron frame and lid components of manhole and catch-basin structures to be adjusted easily to surrounding road surfaces. Capable of dampening traffic loads, dissipating vibrations and reducinginfiltration, Infra-Riser products will not break, split, rot, crack or chip. Achieve perfect grade adjustment in moments, according to the manufacturer. The lightweight, easy-to-handle risers are made of 100 percent recycled raw materials; discarded tires make up over 90 percent of the recycled content. Choose from round, square or rectangular designs and flat or tapered risers.
East Jordan Iron Works, East Jordan, Mich.
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