FAB VENT™ is a cover specifically created for the power and transmission industry to span troughs containing HV power cables. The covers have a louvered steel plate design which allows for natural ventilation of the troughs and at the same time blocking direct sunlight onto the cables. National Grid commissioned Southampton University to carry out thermal analysis on the FAB VENT™ against similar designs in the industry. The report was conclusive that the unique FAB VENT™ airflow design performed the best in high temperature situations ensuring HV cables lose minimal power and as a result were used across the London Power Tunnel project. Another advantage is the covers can be designed for large spans and heavy wheel loads, with the option of 250 kN and 400 kN ultimate load capacities. Our technical team are available to discuss a design to suit your trench configuration.
  1. FAB VENT™ Culvert Cover 250 kN Ultimate Load

    GRA0000678

    FAB VENT™ Ventilated culvert cover approved by Electricity Alliance East designed for 250kN ultimate load

    • Suitable for both air venting and drainage solutions
    • Designed for heavy duty environments
    • Manufactured in high grade mild steel and hot dip galvanised after manufacture to BS EN ISO:1461 
    • Designed and tested using the latest FEA software, combined with fatigue analysis to ensure longevity of product life
    • National Grid approved
    • Mechanical lifting points as standard

    All our products shown can be adapted to suit customer requirements, send your enquiry to our dedicated sales and design team. We pride ourselves on our rapid service and customer deadlines are prioritised for a satisfactory outcome.

    ‘Value and service for our customers through our people.’

  2. FAB VENT™ Culvert Cover 250 kN Ultimate Load

    GRA0000646

    FAB VENT™ Ventilated culvert cover approved by Electricity Alliance East designed for 250kN ultimate load

    • Suitable for both air venting and drainage solutions
    • Designed for heavy duty environments
    • Manufactured in high grade mild steel and hot dip galvanised after manufacture to BS EN ISO:1461 
    • Designed and tested using the latest FEA software, combined with fatigue analysis to ensure longevity of product life
    • National Grid approved
    • Mechanical lifting points as standard


    All our products shown can be adapted to suit customer requirements, send your enquiry to our dedicated sales and design team. We pride ourselves on our rapid service and customer deadlines are prioritised for a satisfactory outcome.

    ‘Value and service for our customers through our people.’