Steel Ventilator Lids are used to allow hot air to ventilate from the trench and prevent heat build up, primarily when using power cables. These lids are constructed of galvanized bar grating and are available for all of our one piece trench designs.
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Concast Barkman Oldcastle Fibercrete Duralite Synertech Plastibeton"In my opinion Trenwa makes a much better trench than Concast." "In my opinion Trenwa makes a much better trench than Duralite." "Fibercrete is poorly made" Barkman, Fibercrete, Duralite, Oldcastle Synertech, Concast Plastibeton "Trenwa trench is more affordable than Synertech Plastibeton"