Dark Base 900 Pro

[Firebolt14]

Can you put bottom fans on the dark base 900 pro or are there already some.

 

[chegalhavara]

That case comes with 2x 140mm fans @ front and 1x 140mm @ back.
Optional:
Front (mm)1x 140 (w/o ODD cage)
Top (mm)3x 140 / 4x 120 / 1x 180
Bottom (mm)2x 140/120