Fireplace back | Article about Fireplace back by The Free Dictionary
The rear wall of the firebox; usually constructed of firebrick and sloped forward to reflect heat back into the room, and provide room for a smoke shelf above it.
References in periodicals archive
Have your chimney inspected annually to ensure nothing is holding your fireplace back
from performing properly.
You could actually install your own stacked stone fireplace back
in the UK.
This could be the year that you bring a boarded-up fireplace back
I keep the award in the middle of the fireplace back