A fitting to fix my extraction pipe to my window, allowing me to:

• keep the window ajar for air
• blow air down so that it is less likely to come back in
• fit s good amount of filter material into the box
• keep the window closed enough that the cats still can't get out
• print without needing internal support

Note: Depending on your setup... I have since found out that the VOCs generated with good airflow actually increase rather than quickly reaching a saturation point. So try to seal your printer and have this solution to vent after prints rather than throughout.