EntityQ898405· pop 23· linked from 373 articlesfirewallSign in to savebarrier used to prevent the spread of fire through or between structuresConnectionselectrical substationEntityGermanyCountryNorth AmericaEntityWorld War IIConceptWeatherConceptbrickEntitybuildingEntityconcreteEntitytransformerEntitypressureEntityroofEntityexplosive chemicalsEntityconstructionEntityconflagrationEntityUlan-UdeEntityfirefighterEntityfirewallEntityheat transferEntityreinforced concreteEntitywildfireEntityCategoriesFirefightingPassive fire protectionTypes of wall