Product Details

• Reduces inflow
• Reduces treatment plant costs
• These manhole inserts are manufactured from HDPE and will not rust or corrode
• They have been proven effective in reducing or preventing surface water in flow 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
• The manhole inserts include 2-3/16" vent holes which release liquid at a rate of not more then 5 gallons per 24 hour period
• Each insert is equipped with a heavy-duty polypropylene strap for ease of removal and installation
• HDPE manhole insert 21"-29"
• Custom manufactured dimensions required