WDQ-B roof exhaust vents feature horizontal louvres; these
reduce the air exhaust flow below the performance ratings
of WDQ-A units while minimizing to a great extent the risk of
rain, snow, or water ingress. The standard installation method
requires bolting PQ angles to a roof base or a duct, either
made from galvanized steel sheet. The product is available
in stainless steel sheet on request.
