Back hearth

back hearth

[′bak ‚härth]
(building construction)
That part of the hearth (or floor) which is contained within the fireplace itself. Also known as inner hearth.

Back hearth

The fireproof floor under the grate area upon which a fire is built.

back hearth, inner hearth

That part of the hearth, or floor, which is contained within the jambs of the fireplace.
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