TFR0012 is a downflow radiator for the Freightliner, Sterling Condor, model years 2003 to 2007.
The core measures 41" high by 28.6875" wide, 2.25" deep. It has a 2" inlet at the right and a 2" outlet at the left. There is no integral oil cooler and no filler neck.
It replaces 63 OEM and aftermarket numbers, among them FRE39, 1806338, 1A19130. Searching any one of them will find this part.
On radiators the inlet and outlet positions, and whether the unit carries an oil cooler, decide interchangeability more often than core size does. Two radiators with identical cores are frequently not interchangeable.