70 kg/m3 density, 20 mm thickness fire rated rockwool is used between the blade walls. Fire dampers are used for the purpose of preventing the fire and smoke from diffusing to other places with air ducts in building ventilation systems. The fusible link mechanism that is presented at the damper provides the blade in the damper to close by driving with the return spring when it reaches at 72°C and prevents the fire from diffusing to other places. Also, it can be controlled with servomotor automation system, as well. The fusible link is fixed to the damper on the face where damper handle is presented in such a way that it can be replaced easily.
