The ventilation class includes the reasons for, and advantages and disadvantages of the different types of ventilation as they relate to building construction and procedures. Students will review fire behavior as it relates to building construction and its relationship with fuel load, occupancy type and its place in the list of tactical priorities. From jalousie to double hung, from gambrel to four – twelve pitch, the window types and roof styles have an affect on the ventilation operation. The recognition of signs and methods of preventing potential backdrafts and flashovers is an important part of the class. Advantages and disadvantages of vertical, horizontal and forced ventilation are discussed and practiced when possible at the local level.