You will get the same at an authorized Panasonic service. It is best to check how much voltage you have on it, it often happens that these are fans used in computers. You will know the voltage and dimensions, then you can go to the electronics store or to the computer parts store.
The same can be purchased in the store www.soltronic.pl only I do not know if there is sense, because the second I will be exchanging. I think I will put something on the computer now, because these years last and buzz.
If it is buzzing, remove and repair it or take it to a computer technician, have it repaired, it should also work. I get a fan to repair it once a week and I fix it as it works and I don't replace it, because it's a cost, and I have a profit for myself.
Diagonally between the holes for screwing it is 55 mm, so it will not enter the housing I connected other fans for a moment and after a while the same error F61, if not for this protect that would be ok
Panasonic controls the current flowing through the fan. Unoriginal will not work. It is necessary to pry the plastic cotter pin off the fan axis, clean the bearings and axle, then lubricate. Every Vietnamese or Chinese is consumed in this way.