For unit AQUACIAT LD2 180V (7368676): *From serial N° 712275 to serial N° 1738584 included *Safe serial N° 1692296 - *Aluminium coil. If special coating please consult us For unit AQUACIAT LD2 200V (7368677): *From serial N° 712279 to serial N° 1844916 included - *Aluminium coil. If special coating please consult us For unit AQUACIAT LD2 240V (7368679): *From serial N° 712280 to serial N° 1736726 included *Safe serial N° 1692298 - *Aluminium coil. If special coating please consult us For unit AQUACIAT LD2 300V (7368680): *From serial N° 712283 to serial N° 1874213 included - *Aluminium coil. If special coating please consult us For unit AQUACIAT LDC2 180V (7368799): *Aluminium coil. If special coating please consult us For unit AQUACIAT LDC2 200V (7368800): *Aluminium coil. If special coating please consult us For unit AQUACIAT LDH2 300V (7368812): *From serial N° 712287 to serial N° 1818661 included - *Aluminium coil. If special coating please consult us