HDPE Manhole Inserts
  • Low Cost
  • Easy to Install
  • Reduces Inflow
  • Lowers Treatment Plant Costs
  • Dimensional Chart for Ordering

These manhole inserts, also known as shields are manufactured from HDPE and will not rust or corrode. They have been proven effective in reducing or preventing surface water inflow to the collection system, through the manhole lid.

Operating, utility and maintenance costs for plant equipment and pumps are minimized, due to reduced flow during heavy rainfall.

These HDPE manhole inserts are a practical solution to expensive plant expansions, new construction moratoriums or high sewage treatment costs.

HDPE meets the requirements of ASTM D-1248, Class A, Category 5, with a finished thickness of 1/8 inch.

The manhole inserts include 2) 3/16" vent holes which release liquid at a rate of not more than 5 gallons per 24 hour period. Each insert is equipped with a heavy-duty polypropylene strap for ease of removal and installation.

You must specify measurements when you order these items because Protectors are custom designed per your measurements, and they and are non-returnable!

Reference the Dimensional Chart here when you place your order online, simply add the dimensions in the Comments field of the shopping cart. If you have any doubts or concerns, please call Tech Support at 800-437-1146.




QTY WPA90010

HDPE Manhole insert 21"-29"

QTY WPA90011

HDPE Manhole insert 29"-33"

QTY WPA90012

HDPE Manhole insert 33" and up