Euramco's RamFan EFi50XX is an Intrinsically Safe 16 in. blower. Totally enclosed 1/2HP motor is mounted in a rugged, chemically-resistant, glass-reinforced ABS housing. Metal motor carrier and IP65 rated switch enclosure. 16 x 21 inch blade precision balanced cast aluminum impeller. Includes 1 reversible duct adapter that allows a change for suction or discharge. High capacity, low head flow. Use with 16 inch conductive duct. Power cable is 30 feet long. The plug is not included, since maintaining the intrinsic safety is site specific. Please plan on this. Also, the factory can, by special request only, install specific connectors. This blower may be ordered selectively in either 115VAC or 230VAC at the same price. Also, the user has the option of changing this setting later with a switch on the motor.