Back-Draught Shutters Metal

Description

• Backdraft shutters (or Butterfly Dampers) are commonly used with inline exhaust fan systems.
• The shutters open with the pressure generated by air stream then closes automatically.
• They prevent air return when the fan is out of operation, thus preventing the entry of dust, odor, smoke etc.
• Diameters from 100 to 500mm.
• They have a rubber tape on the perimeter for perfect connection.

PDF / Specifications