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