Qmark Contemporary design combined with commercial-grade steel grille to provide comfort through optimized airflow Fan-only operation for summer use Built-in 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 double-pole thermostat allows for easy adjustment to maintain desired temperature All units have a permanently lubricated enclosed fan motor, which creates long life, low maintenance, and gently distributes warmth throughout the area *