Smoke shelf | Article about smoke shelf by The Free Dictionary
smoke shelf[′smōk ‚shelf]
A horizontal surface directly behind the throat of a fireplace to prevent downdrafts.
A concave shelf on the back wall of a smoke chamber, just above the throat, to redirect downdrafts into updrafts on the front wall of a smoke chamber.
References in periodicals archive
The relationship of the dimensions (opening height/width, firebox depth, size of smoke shelf
and flue) is critical.
Use the noodle brush to remove all the soot from the smoke shelf
. Then switch back to the long-handled brush to clean the sides of the firebox.
Scraped-off debris lands in the firebox and on the smoke shelf
, where it's vacuumed up.