Double walled heavy duty with forced aircirculation thermostatically controlled,temperature up to 250°C accuracies ±2°Cto ±5°C with a dial-type thermometer. Towork on 220/230 or 440 V A.C. 1. For 12 trays2. For 24 trays3. For 48 trays4. For 96 trays5. For 192 trays