NISSAN 2011 Altima Hybrid - Owner's Manual - Manual (Page 179)

Adjust air flow direction by moving the vent
slides.
Open or close the vents by using the dial. Move
the dial toward the
to open the vents or
toward the to close them.
Right and Left
WHA0736
Center
WHA0737
Rear (if so equipped)
WHA0688
VENTS
4-18 Monitor, climate, audio, phone and voice recognition systems