Fan duct adapter for ceiling collar (4 inch)

I made this to connect the fan duct from the back of my Anycubic Photon to the bathroom ceiling vent. You will need a [ceiling collar](https://www.homedepot.com/p/4-in-Ceiling-Collar-CC4/100124671), the metal springs from inside a vent cover, and two zip ties. After printing, I lined the adapter up on the ceiling collar and drilled two holes for the zip ties to pass through.