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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
not compatible with Heavy Gauge or airtight systems
and Angle Ring connections
Temperature range:–65°F to +200°F
Exceeds temperature limit of most plastics and is an economical alternative to specialty fabric duct
Flap Exhaust Valves (Flap Stacks) Trapeze Hanger not compatible with Heavy GaugeA resourceful after the fan product, flap exhaust valves, or stacks, are designed to open, like bird wings, with the airflow and close when the system is not exhausting. The lightweight and balanced blades produce minimal resistance to exhaust. The design of the housing and blades channel rainwater away from the opening and allow it to drain without intrusion into the ducting. Available in 4" to 32" diameter (contact for custom sizes). Also known as
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