Fireplace back

Fireplace back

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.
This could be the year that you bring a boarded-up fireplace back into use.
I keep the award in the middle of the fireplace back at mine.