I also live in the Midwest (ND to be specific) and most of the buildings from the 50’s-70’s had/have old Simplex systems. The only Edwards systems that I have seen in my area were from the 90’s and those have already been replaced.
I also live in the Midwest (ND to be specific) and most of the buildings from the 50’s-70’s had/have old Simplex systems. The only Edwards systems that I have seen in my area were from the 90’s and those have already been replaced.