These fan "SUNON MF40100V1-1000U-G99" allow you to cool the heatsink faster and minimize heat creep, therefore preventing clogs even when utilising lower layer heights. Comes with connector already attached and 700mm cable, just like the stock Noctua.

Specification:
Supply voltage: 5V DC
Current rating: 0.138A
Power consumption: 0.83W
Rotational rate/speed: 7000rpm
Noise level: 27.3dBA
Fan efficiency: 13.52m3/h
Fan dimensions: 40x40x10mm
Fan motor: brushless DC motor
Cable length: 700mm