the walls are not fire rated for some spaces
but other spaces (having a with similar situation of ducts crossing the walls and protected by FM200)have fire rated walls
so i have the 2 options :D
thanks
Hello everyone!
Several type of ducts are passing in the ceiling of a room protected by FM200 system as follow:
1-Supply duct to the space
2-Return duct to the space
3-Fresh air duct to the space
4-Exhaust air duct to the space
5-A series of ducts that are crossing the protected room walls...
