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Natural Daylight

The benefits of natural daylight and natural ventilation are undisputed – they improve our productivity, our focus and our wellbeing. While Passivent’s product ranges focus on natural ventilation, we also offer a product called ‘Litevent Airstract®’ in the roof terminal range that provides both – it combines a controllable ventilator with a rooflight bringing natural daylight, as well as natural ventilation into your building project.

Our collection includes

Litevent Airstract® Rooflight/Ventilator

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.

Important Notice

Please be vigilant of fraud/cyber crime. If you receive an email from our parent company Building Product Design Ltd, please check that the email address from the sender ends in '' and any phone number given is 0161 905 5700.

If you receive any emails ending in '' or '', these are NOT legitimate, and you should contact us as soon as possible at

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