RB1100AH Fans

Hi there

I need to install fans into a RB1100AH. This is what I get from the manual:

Fans JP1202 and JP1204 - 12V; 0,2A max.
JP1201 and JP1203 - 3,3V;0,3A max.
Only one Fan in each pair will rotate, other will start when first fails.
Only one pair can be connected at the same time (two fans).

The routerboard is located in a data center so I cannot physically test what size of fan will fit.
What size fan will work ?

Regards

I’m almost positive they would be 40mm fans. The x2 has 40mm and its the same sized router.

Thanks!