6in to 4in Coupler

While a 6in to 4in coupler is available in many big box stores, sometimes it's quicker and easier just to print your own. I designed this one to print quickly, with plenty of room to connect the ductwork clamps.

This one is installed in my garage to vent my paint booth to keep the fumes down.

Print at a 0.28mm layer height at a 3 wall thickness.