Anycubic Chiron Cooling Fan Duct (3 sides, updated version)

Unfortunately my Chiron got delivered without fan duct so I was forced to search for replacement. I found one here that I printed and tried out. Unfortunately while printing something sooner or later one of the two ducts were catched by the print so the print was ripped of the surface. So I decided to design a new one which is a little bit shorter in vertical length and also the ducts are a little bit shorter. Furthermore the ends are rounded to prevent catching the print - just to be on the sav