The type AQB2 Blower Assembly and AQE-12 or AQE-16 fan coils were specifically designed where height must be kept to a minimum. The units are interconnected by flexible ducts. The AQB2 Blower is used for both the 12000 and 16000 BTU models. It is available in either 115 or 230 volt, 50 / 60 cycle power.