This is a brand new Nidec TA350DC-M33422-16 DC Double Ball Inverter Fan.  It is 12 Volts, .29 Amps, 3.48 Watts, and runs at 3100 RPM.  It is a 2 wire connection and is a 92mm x 92mm x 25mm.  Multi-quantity discounts available with listings for 5 and 10 in my store.