Case fan size?

[killerloader]

I'm trying to find a Case Fan for my "N81 Mid Tower" Computer Case.

On the wall of the case, there is a circular grate which looks like a fan should go there, as it can be unscrewed, I measured diagonally from one screw to another and it was about 148mm
One screw to another vertically or horizontally is about 104mm.

None of these are actual fan sizes, i think 140mm is closest. - So what should i choose?

 

[InvalidError]

120mm is the length of the whole side.

From hole-center to hole-center along one edge, you get ~105mm.

So you need a 120mm fan.

 

[dottorrent]

Those are some very strange fan sizes for a case. Try a 140mm fan and if it doesn't fit, send the case back, as that there is very poor quality control.

 

[killerloader]

Yeah sorry, i didn't know if it was measured diagonally.
Makes sense to be 120mm, considering there would be some extra room to each side of the screw.
Thanks invalid!

@dottorrent
If they are measured non-diagonally, then 140mm is far too much - Considering i measured about 104 that way, still, thanks for the help!

 

[anti-duck]

I looked your case up (Coodmax N81?) and everywhere listed it as a 120mm fan mount on the side panel.

 

[killerloader]

Thanks anti-duck!
I searched for a bit and gave up... Although now that i search again, i see it is in the 5th result on google.....
Atleast there is no doubt now!