On-Line Catalog : Backdraft Dampers > Light Duty > Butterfly Blade > BD-20
Model BD-20 backdraft damper butterfly style blade
Application
BD-20 backdraft dampers employ gravity operated butterfly style blades to restrict reverse airflow and to permit the forward flow of air in the intended direction. The BD-20 damper may be mounted vertically or horizontally in either exhaust or intake installations for low velocity and pressure applications.Documents
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