Fantech IR4 4" Duct Manual Iris Damper
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About this Product
Duct dampers allow you to control temperature and other types of systems where ductwork is involved. By installing the Fantech IR4 -4” duct damper, you are gaining further control over your ducting. With the built-in calibration, the Fantech IR4 is even easier to setup. Based on how you setup the damper, the damper will open or close and allow or restrict air flow respectfully.
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