The type D roof exhaust vents are available in galvanized steel
in the standard version. The bottom part features an FLS steel
flange for connection with the roof base.
Other connection types and sheet materials are available.
The base has a deflector for protection against snow and
drainage of water to the outside of the vent. The roof exhaust
vent requires bracing with side stays.
Since WD-D units have no standard drip features, they must
only be used in continuous air flow ventilation systems.
