Fire-resistant architectural terminology refers to non-combustible walls that prevent the spread of fire to adjacent areas and have a耐火limit of not less than 3 hours. They are used to delineate fire compartments or serve as critical barriers to prevent the spread of fire between buildings. These walls can effectively contain a fire to a specific area during the early stages of a fire and the extinguishing process, blocking the fire from spreading from one side of the firewall to the other. They play a crucial role in reducing fire losses.

Firewalls, along with common brick walls and floors, are fixed fire separation components; operable and closable types include fire doors, fire windows, fire curtains, and fire water curtains, etc.