Lets have a look at the Fire Damper which maintains the integrity of the current barrier, preventing the fire from spreading before temperatures reach the barrier's fire rating limit. Its principal purpose is to prevent fire from spreading from one side of a fire-rated separation to the other. Our provided Fire Damper is now available in a few ranges like ms fire damper and s type circular fire damper. This must be installed in all non-ducted air transfer holes in rated walls, regardless of the rating. It is also required at some rated floor assemblies and shaft enclosure penetrations, but not all.