Explosion Proof Ventilator Fan / Blower with 25 foot Static Conductive Duct Fan Redirects Stale Air From Hazardous Location Areas. Ships with 25 foot static conductive duct. This explosion proof blower is unique because it is certified for all groups including Group A and B. Generally, only air driven blowers are certified for Groups A and B. Pneumatic operation means that this fan requires a compressor to operate it.
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