Heavy gauge welded steel cabinet with powder coated finish and control compartment with a hinged and latched access door, simplifying wiring installation and maintenanceCircular copper clad steel sheath element with continuously brazed steel fins formed to match the air delivery pattern of the fan bladeAll units come equipped with automatic reset type limit controls to de-energize the heater should an over temperature situation occurTotally enclosed, 1-phase, permanently lubricated, thermally protected motors with unit bearings on 3 to 10 kW models and sleeve bearings on 12.5 to 48 kW models - mounted with rubber insulators to minimize vibration and noiseFan assembly enclosed by a heavy gauge, close spaced, chrome plated wire guardLouvers are individually adjustable for directional control of air flow and the entire assembly can be repositioned in the field from down flow to up flow or left/right directional air flow20 to 48 kW units and all 480 V have built-in 24 V transformer for low voltage remote thermostat application