Our down-flow relief/intake cowls are suitable for when a low resistance, high flow exhaust, intake or pressure relief cowl is required. An easy roof mount design and a variety of sizes ensure application for a wide range of flow rates.


  • UV stabilised fibreglass cowl and base.
  • Galvanised steel supports/bracing.
  • Vermin proof mesh.​

Common Applications:

  • Building Ventilation Exhaust
  • Building Ventilation Intake
  • Building Ventilation Relief