92mm fan duct

I have a Dan Case A4 on the way along with the Noctual NH-L9 and have been reading that a fan duct improves the temps greatly. there was only one i could find for 3d print and i didn't like it, so drafted this i up real quick in tinkercad, its a bit ugly but should do the job when my parts arrive.

happy for others to take it an improve on it.