E3DV6 dual 40mm fan duct

I have been thinking, if we keep buying unnecessary different size fan, it will just increase our costing, why not have things which are same and lower down supplier costing. I print with.

** can you guys after print give me a feedback on which fan you like it more? Fan 1 or Fan 2.

Please i would love to know and see whether is there space to modify

On 23 Oct 2015, I have submitted a new modified design, but i have to say the modified design must print with support, that's a sad news bu