Qmark Contemporary, commercial-grade steel grille, designed to provide comfort through optimized airflow Power on/off switch for added safety during maintenance Manual reset thermal overheat protector disconnects power in the event of accidental blockage Automatic fan delay eliminates cold drafts on start-up and discharges residual heat from the heater body during shut down Integral thermostat allows for easy adjustment of room temperature to maintain desired comfort level All units have a permanently lubricated fan motor, which creates long life and low maintenance, and gently distributes warmth throughout the area Tamper-proof plug for thermostat hole *