Enclosure Ventilation / Extractor

Ventilation ducts for enclosure with 2 fans 80x80mm. In my case it is to be used in the lack enclosure.
The print has some imperfections because it was printed with nozzle 0.8. Only "duct_right" and "duct_left" need "touching buildplate" support.

I can provide a fusion 360 file to anyone who wants to do a remix.