TPR0030 is a radiator for Peterbilt trucks, model years 2008 to 2014.
The core measures 40.5" high by 31.4375" wide, 2.0625" deep.
It replaces 27 OEM and aftermarket numbers, among them 6501424, 770034, 770034AT. 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.