Flashforge Dreamer Dual Fan Duct [Improved; w/ PrusaSlicer profiles]

thingiverse

This duct design delivers a lot of air flow to both the right and left nozzles, considerably more than the duct I used as a base. The airflow is close to balanced between left and right when running at full fan speed, the airflow may become unbalanced at lower fan speeds but this isn't an issue as this printer does not support variable fan speeds (at least as far as I can tell), but if you have replaced the controller board, etc, then be aware. The "Flashforge" backsplash (that decorative bit of black acrylic standing up behind the print bed) will likely need to be removed to allow for clearance, otherwise installation is just a matter of removing the old duct and installing this one.