Durable, tamper-resistant convection heat. Low operating temperatures of 140°F maximum surface temperature in a 70°F ambient. Internal, secured thermostat with 55° to 100°F range. 12-gauge perforated steel provides rugged resistance to vandalism. Epoxy baked enamel finish insures resistance to chipping, cracking and rusting. Sloped top cabinet prevents objects from being set on top, which could restrict airflow.