Cabin air inside/outside recirculation flap broken

Had issues with very low air flow through all vents. Discovered it to be that the 4"x6" "flap" that switches from outside to inside air intake had broken on the end it attaches to the actuator pin and fell flat blocking almost all air. I'm looking for instructions to remove this whole housing so that I can attempt a repair (I think I can glue/epoxy it back together and get it functioning again). I could also replace just the flap if I could possibly find that part.