Passive stack ventilation terminals
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Passive stack ventilation terminals. Find the best product for your project here.
Windvent NV/PS natural ventilation system
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Midtherm Windvents are natural ventilation systems that are suitable for a number of buildings. They offer cost effective alternatives to air conditioning and mechanical ventilation, as well as providing improved conditions that promote occupant productivity and reduced sickness. Windvent NV/PS Balanced / Passive systems work on the principles of- PRODUCT
- Midtherm Engineering
Maximair Turrets are designed to act as rooftop weathering passive ventilation terminals and are particularly suitable for mounting over ducts, liftshafts or stairwells. These units perform especially well in a classroom environment when coupled with controllable dampers and control panels. Available in a variety of shapes and sizes, the turret- PRODUCT
- McKenzie Martin
Penthouse louvres
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Series PH and PHS Penthouse louvre assemblies have been designed to provide weather protection to ventilation openings in building roof platforms. They are commonly used to terminate the supply and exhaust duct openings through the building roof fabric. They are composed of frame and blade assemblies, manufactured to suit the building opening- PRODUCT
- Brooke Air
The Windvent VL (formerly Ventlite) system is a combined commercial natural ventilation and lighting unit combining the dynamic louvre blade technology and proven Solatube day lighting technology. Windvent VL combines the ‘fresh air’ supply from our Windvent natural ventilation system with our world class-leading Litepipe to delivering natural- PRODUCT
- Midtherm Engineering
GRP Roof Ventilation Turrets
Visit siteMost of our standard GRP roof turrets, clock towers and cupolas can be adapted to offer a means of achieving inlet and outlet ventilation with the addition of aluminium ventilation louvres, whilst providing an attractive architectural enhancement of the property on which they are installed. Alternatively for simple free air movement in a roof- PRODUCT
- Good Directions

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