Hurricane BAL natural ventilator

For over 25 years, the Hurricane® range vertical vane natural ventilation technology has been built to endure the tough climatic conditions and operating environments. Bradford Ventilation products are designed, engineered and manufactured at its ISO9001 accredited facility in Seven Hills, Australia.

Hurricane was the first industrial ventilator to incorporate vertical vane design which tests at University of Technology Sydney have shown to be have an improved co-efficient of discharge (Cd) compared to similar sized traditional spherical vents.

Hurricane range of Special Variations ventilators such as the BAL rated ventilator is designed for buildings in Bushfire Prone Vegetation Category 1 areas. It is designed to comply with the Deemed to Satisfy provisions of AS3959.

A list of case studies can be found here.

Features and benefits

Features and benefits

  • Constructed from non-combustible materials
  • Rated to BAL-40
  • Critical components are enclosed and/or protected from possible harmful elements for increased reliability and durability
  • Improved co-efficient of discharge (Cd) compared to similar sized traditional spherical vents
  • Lightweight design entails crane-life might not be necessary, possible reduction in overall installation cost
  • Variable pitch throat design can adapt to most roof angles
  • Higher flow co-efficients than comparable sized traditional spherical vents
  • Design and tested to Australian Standards AS4740
  • Flexible design and product configurations
  • Available in 300 and 400mm throat sizes only
  • Mill finish or power coated option to match most Colorbond® colours

Bradford Ventilation offers a service to help select the right size, number, type of vents is specified according to AS4740. Click to enquire or contact your account manager or contact our office.

Specification BAL

Product Suitability

Always check product suitability and limitations of use prior to selection - refer to the Product Technical Statement (PTS) available online.
Contact our technical team
Specialist team:
(02) 8824 0444
Case studies

Browse our commercial & industrial case studies to see how Bradford Ventilation can help your project


A hybrid ventilator that works to ensure a constant supply of fresh air for commercial industrial buildings.