UL-certified for use in hazardous locations where explosive gases or dusts may be present, and designed for the harshest industrial environments, the Ruffneck™ FX5 Explosion-Proof Electric Air Unit Heater is intended for dry indoor industrial applications such as oil refineries, petrochemical plants, pulp and paper mills, grain elevators, hazardous waste storage facilities, wastewater treatment plants and more. Features & Benefits At A Glance * the heater core assembly is contained in a sturdy, epoxy-coated, 14-gauge steel cabinet (optional Heresite® coating and stainless steel construction for corrosive environments available), which also houses the motor and fan assembly * adjustable louvres allow directional control of airflow * stainless steel cabinet construction available for harsh corrosive applications * narrow gap, two-piece fan guard provides safety against all moving parts * automatic reset bimetal high-limit; secondary ambient high-limit for added safety * available in a range of wattages, from 3 kW to 35 kW * approved for the following Hazardous Locations Classifications: Class I, Divisions 1 & 2, Groups C & D; Class II, Divisions 1 & 2, Groups E, F & G; Class I, Zones 1 & 2, Groups IIA & IIB; Temperature code T3B 165°C (329°F) Ruffneck™ also manufactures the FX4 Series Explosion-Proof electric air unit heater, the predecessor to the FX5. For details on the FX4, please visit http://www.ccithermal.com/products-ruffneck.php?product=fx4