The Vertical Discharge Cowls are ideal in ducted systems
where the fan is mounted remotely below roof level.
They work together with a mechanical exhaust system while
preventing the entry of rain when not in use. These durable
and robust units are available with a flanged or square base
for mounting on circular duct and flues or square upstands
respectively.
There are 16 sizes in the range handling air flows from
0.1 to 70m3/s
Special Note
Vertical Discharge Cowls are designed for relatively high
air discharge velocity. At low discharge velocities, rain could
enter the building. For these types of applications an Alpha Relief
Air Vent is recommended.
For any application where prevailing winds may lift the shutters
of the Vertical Discharge Cowl, we recommend the fitting of
Magloks®.
Ensure the hinge of the shutter points down the slope of the roof.