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

Product Sheets

BD-20

CSI Specifications

BD-20
BD-20