Shutters


150mm back draught shutter for fan ducting - close when no airflow

150mm back draught shutter for fan ducting - close

 

200mm back draught shutter for fan ducting - closes when no airflow

200mm back draught shutter for fan ducting - close

 

250mm back draught shutter for fan ducting - close when no airflow

250mm back draught shutter for fan ducting - close

 

300mm back draught shutter for fan ducting - close when no airflow

300mm back draught shutter for fan ducting - close