smoke shelf

noun

1. a ledge at the bottom of a smoke chamber, so made as to deflect or break downdrafts from the chimney.

Example Sentences

The throat will in this case be in the middle of the chimney with the smoke shelf on either side of it.

From Project Gutenberg

The second vital consideration is the introduction of what are known as a “smoke shelf” and a “smoke chamber.”

From Project Gutenberg

The depth of the smoke shelf should be the same for a 2-foot as for a 10-foot fireplace opening.

From Project Gutenberg

The smoke shelf should not be bricked up but should conform to the dotted lines.

From Project Gutenberg

The smoke shelf is built just where it will prevent this action.

From Project Gutenberg