Quick and powerful expanding pivoted turnbuckle
for positive gripping power.
The Manhole Riser Rings come completely assembled and take 5 minutes to install.
Our Manhole Riser Rings come in a one piece assembly - no loose parts to lose.
The Manhole Riser Rings provide a flat surface for seating manhole covers.
The Manhole Riser Rings will not break from uneven seats or installation forces.
As shown here, our riser is remarkably durable and has
tremendous staying power.
All of our Expandable Manhole Risers will accommodate a plus or minus ½ inch diameter change, giving an entire one inch diametric Manhole Riser variance