Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 21

Defined Terms: Throat

The throat is the contracted part of a flue between a fireplace recess and its chimney.

Throat – a contracted part of the flue between a fireplace recess and its chimney. See Diagram 3.5.

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet L - Combustion Appliances and Fuel Storage Systems.pdf