Vented Fire 2 : A fire that has broken windows or burned through the walls or roof of a building, releasing heat and smoke and allowing the outside air to enter
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}