I was having trouble with the fan shroud on my Slice Engineering Mosquito modified printer drooping and crashing into the print. I finally had enough and made a supported fan shroud. Don't know if this is going to work. Maybe printing this part in PETG just isn't going to work. Maybe I'll have to break down and order some ABS or PC.
** Important:
The thin horizontal blade in the front of the shroud is a removable support. Remove prior to installing.
Print it in something heat resistant.
The author hasn't provided the model origin yet.