I'm in the process of demolishing parts of an existing fireplace to install an insert. The insert requires a 120v outlet.

Where is the outlet typically put ? Is it recessed in the brick or is a box just left in the back of the fireplace ?

I will be hiring an electrician to install this, but we're doing the demo right now and I was debating taking out some additional bricks to get the power line run in.

Thanks for any pointers !