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Litevent Airstract® Rooflight/Ventilator

The Litevent combines a controllable ventilator and a rooflight, for installation on flat or low-pitched roofs. It is designed to contribute to the reduction of energy demand in commercial buildings.

Features and benefits

  • Combines natural ventilation and natural daylighting functions in one unit.
  • Provides controllable ventilation with minimal energy consumption.
  • Reduces the need for artificial lighting, thereby further reducing energy expenditure.
  • Thermally insulated aluminium upstand and triple skin polycarbonate glazing (clear, diffused or bronze options) minimise heat loss. 
  • Unit has been subjected to large, soft body impact testing by BRE and may be considered non-fragile to HSG33.
  • Driving and deluge rain resistance demonstrated by test.
  • Height of upstand will accommodate both warm and cold deck constructions without the need for an additional timber kerb.
  • 4mm screen in cowl excludes large nesting insects.
  • Available in four different square sizes and one rectangular size. 
  • Varying sizes offer different daylight areas and different ventilation free areas.



Range Brochure


Specification clause


Have a question?

For any questions or queries about our product ranges and the technical support services we can offer, please contact us using the form below.

Passivent is a division of Building Product Design Ltd.

Other subsidiaries include Glidevale Protect, a specialist in ventilation solutions, condensation control and energy efficiency across the built environment and Kingfisher Louvres, manufacturer of aluminium louvre systems.

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