Remove the 2 screws mounting the floor duct to HVAC unit using a 5/16 socket.
Remove the 1 rear screw mounting the floor duct to HVAC unit using a 5/16 socket. You barely see it but can reach from driver's side. After removing all 3 screws you can pull it towards driver's side.
Remove the screw holding the HVAC unit to the firewall bracket, near the fuse panel, using a 5/16 socket or wrench (a holding ring for air duct was attached on the top of the bracket).
Remove the upper air duct in the passenger's side from HVAC unit. No screws or tubs.
This is the upper air duct.
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