which Fan to vent kooltube for 400W HPS?

[socom3riot]

can someone help me out with this, im not really sure what type of fan fits to the cooltube. anything will help , names, links to the fan i need, etc.

 

[Therellas]

what size flange is on the light?

 

[socom3riot]

what size flange is on the light?

good question lol.. im actually in the process of ordering the kit , n wanted to get the right fan at the same time.