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. MADE IN THE USA For confined spaces that require a powerful ventilator that meets strict hazardous space standards, the EPF-30P delivers high-performance with uncompromising safety. UL and C-UL listed for use in Class I, Groups A, B, C and D; Class II, Groups E, F and G; and Class III Hazardous locations. Pneumatic operation means that this fan requires a compressor to operate it. You do not power this unit with an electrical outlet. Instead you connect a compressor that can feed it 38 CFM at 100 PSI. This explosion proof fan has a 3/8" connection for the air hose. The intrinsicallyy safe design of the EPF-30P ensures against dangerous sparking. The energy-efficient, high performance motor is totally enclosed, giving you the assurance to work safely. Yet, with a CFM rating of 2,063, the EPF-30P can provide all the continuous circulating airflow you need to get the job done. Click Here for Information on the Composition of the EPF-30P Housing. FEATURES - CFM rating of 2,063 (58.4 m3) - Weighs only 28 pounds (12.7 Kg) - Stackable to save storage or work space area - Powerful 1.5 Hp pneumatic motor - Capability to connect up to 125 feet (38 m) of straight duct - Redirects stale compressed air away from the main air stream - UL and C-UL listed for use in Class I, Groups A, B, C and D; Class II, Groups E, F and G; and Class III Hazardous locations Click here to learn more about National Electrical Code Hazardous Location Classifications Hazardous location areas require a static conductive duct (8 inches X 25 feet) and aluminum coupler included in this package. The du