At least I can see the valve. I'll need tools to use it.
When wall furnaces are replaced with an atticc furnace the gas pipe must be extended. All to often there is a valve installed where it shouldn't be. Another mistake is the new 2"x4"s on each side. They were added to provide backing for the drywall.
You can't even see the valve to shut off the gas. And look at that ridiculous sediment trap.
This is the hallway wall that backs up to the furnace. Now since there wasn't enough money for two studs, I'm guessing that an access panelis out of the question.