RV booster vent Fan

The vent for the AC in the loft area of our RV had really poor airflow and it would get too hot in the loft area.  So I created a vent booster out  of a 120mm low noise 12V computer fan a switch and 3D printed housing, the housing is designed to diffuse the air out along the ceiling so that it doesn't blow directly down on anyone sleeping in the loft area.

This is know to work in the Keystone Cougar RV's with the blade high performance airflow vent.  Obviously, it isn't really high performance, as I wouldn't need this if it was.  But this helps solve the problem of the kid being too hot in the loft.

The only issue is printing over the diffusion part which is more than 70% off vertical.  With 0.40mm nozzle, using a good quality PLA I was able to get fairly good results.  That shallow angle helps in keeping the air moving along the ceiling and not focusing it directly downward.  If you are having an issue with the overhang, you can easily lopp off 0.4-1mm off the bottom to make it easier to print, the only down size is it may not spread the airflow quite as well but will still work well.

Low noise Fan ( I chose a Noctura Redux 1700, it is nice and quite)

https://www.amazon.com/Noctua-redux-1700-high-Performance-Award-Winning-Affordable/dp/B07CG2PGY6/ref=sr_1_1_sspa?crid=1RR605T6Y39HS&keywords=noctua+fans&qid=1696882961&sprefix=noctura+fans%2Caps%2C115&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

Here is a lighted 12mm switch that will fit in the hole and can be wired to turn the light on when the fan is running.

https://www.amazon.com/gp/product/B0BJCMDGK2/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&th=1