... movie theater .so on Explosion proof Axial Flow Fan Type BT35-11Application1,Designed forExplosive atmosphere Zone 1, Zone 22 ... per user different requirements.4,Impeller installation using symmetrical type to ventilate in two sides at different adjustment angle ... proof performance.6,With flexible installation: Bracket type, Pipe line type, Post type, Fixed type.7,According to the user require to choose ...