Pics don’t really show anything so I am going to ask you to use your imagination. This is a ranch house with a 1 car attached garage built in the late 50’s. The firewall is original and for the most part intact. The sellers added a metal insert fireplace into the family room that backs into the garage. Firewall was cut to accommodate the back of the fireplace, so some holes exist but they built an (about) 8’ wall around the unit that does not go all the way up to the ceiling but covered it with what appears to be 5/8 drywall. The top is open to the garage.
For some reason this just doesn’t seem right but would like to hear from the group.