4" Duct / Dryer End Cap

thingiverse

I built a simple cap to attach to a 4-inch section of ductwork. This modification effectively blocks airflow from the dryer vent by inserting it onto the existing duct end, allowing me to maintain fresh air in my home while also preventing hazardous smoke emissions caused by my laser cutter/engraver's y-connector ventilation system from entering the dry cleaner space.