Where to get 90mm clear duct?

[theHinge]

After mocking up an extremely effective cardboard test unit I have decided to port cold air directly into my cpu's hsf.

I have seen some clear & translucent 80mm kits but would like mine to use a 90mm duct all the way through since I use a 90mm fab on the heatsink. Air filter desired but no problem to make my own work on it.

TIA.

 

[SarverSystems]

80mm-92mm adapter maybe?

Best I can find is an 80mm-120mm adapter: http://www.svc.com/fa-80120.html

 

[rayra]

usplastic.com

ducts or extruded clear acrylic pipes.

 

[theHinge]

That is exactly what I am seeking, thanks!