In order to fulfill the ever changing demands of our clients, we have been engaged in offering a quality range of Duct Damper And Fire Damper. (For Manual or Motorised Volume Control in Ducts) Installed in branches of air distribution ducts, these opposed blade dampers are used to carry out a rough air system blance with closer control being carreied out at the individual grille or diffuser. Available in aluminium or galvanised steel. Motorised version available.