Automatic Roof Ventilators
Diameters Available: 12″-60″ (2″ increments)
When the fan is on, air forces the butterfly dampers to open. When the fan is off, the butterfly dampers close, covering the exhaust stack. An interior gutter prevents rain and snow from entering the stack.
Diameters Available: 4″-16″ (2″ increments)
Diverters are 12 ga. black iron with angle rings on all three outlets. The damper consists of two 12 ga. plates with a rubber gasket between them.
Diameters Available: 3″-10″, 12″-18″ (2″ increments)