How to remove the rear a/c vents and controls?

[txhoescrapin]

I am ready to do headliner, but can't for the life of me figure out how to get those things down. figured everythingelse out. thanks for any help.

 

[drowndindreams]

the vents pop in and out. the controls are held in by a metal ring with 4 clips pushing into the headliner holding it up. get a flat head screwdriver and push the clips in towards the controls. don't break them.