Stainless steel outer shells and feet. Height of the work surface adjustable from 840 to 900 mm. Tops with 2 mm thickness AISI 304 stainless steel tanks with AISI 316 bottom. Water loading by means of 2 solenoid valves, with the possibility of loading cold or hot water. Frontal drain by means of 2" chrome-plated brass faucet. Gas version: heating by means of 2 AISI 304 steel burners, positioned at the bottom of the vessel (direct heating) or in the cavity (indirect heating). Indirect electric version: heating with 2 sets of armoured heating elements positioned inside the cavity. Direct electric version: heating by means of 3 stainless steel heating elements positioned externally on the bottom of the container.