8" F5 Explosion Proof FanF5 explosion proof portable exhaust fans are optimal for use in flammable or explosive environments where quality air circulation and exhaust ventilation is needed. Maintain a suitable working temperature in hazardous or climate sensitive environments with durable F5 quality. F5 explosion proof fans feature an explosion proof motor and switch, cast aluminum blade, and a flame resistant inner barrel. A pure copper inner barrel also prevents sparks,