6" to 4" Duct Adapter – 6” Inner Diameter Enlarged (153.13 mm)

This is a remix of the original model. Thanks to the original creator for sharing the design.

I modified the inner diameter of the 6-inch side, increasing it to 153.13 mm, so the printed part connects to the 6” extractor by fitting over it from the outside.

With this modification, the adapter slides over and fits onto the extractor outlet.

Although this modification slightly increased the 4” side diameter as well, there is no issue connecting flexible aluminum ducting.

Printed, tested, and installed.
The modified version is shown in red in the image.