Fan Sizes

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25 Feb 2011
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Designing a radiaor fan shroud at the moment, but dont have all my fans yet. The fans will be inside the shroud to hide them away, so the case of the fan will have to fit inside. Are all fan cases the same size or do they vary?
 
I've got a 140mm fan, and was going to buy another and build a shroud to adapt it to 120mm for my radiator. The shroud will be going on top of my case so size isn't really a problem.
 
Your going to have to do a lot of cutting out if your trying to fit a 120 in a 140 might be better off getting some plastic or something to make it
 
Just done a very quick drawing to explain myself:
1.jpg

In the bottom part would sit the 140mm fans and on top would sit the 2x 120mm radiator. I'd make it out of a strip of stainless or something similar bent to shape. My question is the outside of every fan the same or do they vary, as it would have to be a tight fit?
 
Aside from the aforementioned thickness:
140mm fans all have the same size. 120mm all have the same size. Otherwise there wouldn't really be much point in having standardised fan sizes :p...
 
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