Update: Made a version with a swept pipe and lip.

Created a mounting bracket for the CC filters that has a 90-degree bend for connecting a 4" dryer hose for ventilation. I modified the case to load from the top, making it easier to access with the hose in place. Still mounts using the existing printer screws.

I also recommend adding an inline fan to the ventilation pipe if your printer is in a room others will be around while printing ABS/ASA. It'll make any gaps in the frame become intakes even with low airflow settings. This printable window vent is a good option to look into as well.

Double check Amazon pricing for HEPA Filters since the cheapest seller changes from time to time. Any listing for 80mm x 60mm x 15mm (3.23" x 1.65" x 0.59") should work, I've linked a 12pk as well.

HEPA Filters

4" Dryer Hose

4" Inline Duct Fan

Filament Companies That Support Me:

FlashForge: PLA/PETG/ASA/CF Filaments

Cookiecad: PLA/PETG/ABS/TPU

Included links are Amazon Affiliate links. If you choose to purchase through these, they will support my projects at no cost to you.