Small fans of the type are commonly produced with varying RPM setpoints; the “8025” designation is a physical size reference, and a portion of an extended part number not shown would call out RPM, termination, extra features such as speed control/monitoring, etc.
For a given fan however, power input is approximately a cubic function of rotational speed so some limited inference can be made from current ratings. Finding something that matches physical size and drawing a similar amount of power is likely to land a person at least in the right ballpark, since the laws of physics apply pretty much equally to everybody. In any event, some fan is better than no fan.
Give FAD1-08025CBJW12-A a try, and see this post and those linked from it if you’re interested in understanding more about fan stuffs.