Stainless steel outer shells and feet. Height of the work surface adjustable from 840 to 900 mm. Tops with 2 mm thickness Available with iron, and stainless steel tanks . Robust, double-walled, self-balancing lids made of stainless steel to reduce heat loss. Water loading via solenoid valve. Cooking temperature controlled by thermostat with adjustment from 100 to 280°C. Gas version Heating by steel burner chromium-plated. Safety valve with thermocouple, electric ignition. Manual or motorised lifting. Electric version Heating via armoured incoloy heating elements.