120mm Fan to 4in Vent Hose Adapter (Female)

Adaptation to allow a 4in vent hose I purchased to fit inside the adapter as the interior of the hose had rivet heads. I hate this hose, will be trying a clear one, but for now, this works well, just an annoying aluminum dentable hose.

Full Kit: http://www.thingiverse.com/thing:1708681

Thanks to wdsparrow