A line of PVC and CPVC duct dampers offered in butterfly, gravity, and blast gate types for fume removal applications is available. The backdraft dampers come in three flow control types: butterfly ...

Heavy-duty, double-flanged, channel frame-style backdraft tornado dampers are designed to protect against tornados and rapid pressure changes. Installed in ductwork or wall mounted near the exterior ...

Q. Our home has a combination microwave/range hood that discharges directly through the sidewall of our home. The wall jack has a weather-head with a spring closure for the backdraft damper. The ...