This 12" Intrinsically Safe Air Driven Blower/Exhauster is for use in adverse atmospheres. Pneumatic powered blower. Precision balanced, cast aluminum turbo impeller. High strength, anti-static glass reinforced ABS housing is lightweight, corrosion proof and chemical resistant. Integral 12"/30cm duct adapters. Complete with filter, motor lubricator, exhaust muffler, air control valve and static grounding cord. Exhausts outside of duct, compressed air not in airstream.