Fan adapter 140 mm Noctua to 75 mm duct with 90 degree bend

Needed a silent, 12V duct fan for boat. Forced air heater is not powerful enough to push air to forward cabin. Had a Noctua NF-A14 FLX lying around, so designed an adapter for that. Print 2 of these, put fan in the middle (holes for wires).

Needs additional support under the fan screw holes. 

Printed with Creality Ender-3 V3 KE. Used generic PETG - ASA would probably be better for this purpose. 

.f3d archive file included for anyone who would like to remix. 
 

Changed duct diameter for 75 mm and added a 90 degree bend. You can use print both of these to use this duct fan casing as an adapter between 90 mm and 75 mm ducting.