We are manufacturing and supplying the VIV dampers, this type of dampers are used for controlling the relationship between the flow/pressure of air or blow from the inlet inside. They are typically mounted right to the inlet of the fan and can offer both fan shut-off and control by rotating in a specific direction to pre-spin the air entering the fan or blower. The VIV dampers are made for the facilities and complexes that need complete control over the regulation of their ventilation systems. The damper is made of high quality metal and is easy to control and install in the system.