The Wash-down Series unit heaters are electric unit heaters constructed for use in areas that require washing or hosing of equipment due to dirty or dusty industrial environments in non-hazardous locations. The totally enclosed water-tight construction made with corrosion-resistant material make this series ideal for industrial heating applications. The Wash-down Series is constructed with all built-in controls and safety temperature controls wired in a non-metallic NEMA 4X control panel with single-point power connections.