what case fan size do i need?

[aUt0eXebat]

In the case discription it says 3" case fan.... My mobo sets the fan speed according to the temp, what fan should i get for this?
a power supply fan fits in the place where the case fan would go if that helps...

 

[mothman]

A 3" fan is the same as a 80mm fan.

What motherboard do you have?

 

[Lithium381]

yeh, an 80mm......why is your PSu there? is it a micro atx case?

 

[aUt0eXebat]

its an ATX case, the fan sits in the front of the case