Where is location of air conditioning air intake on 2011 Ford F-250 SUPER DUTY 4x4 with 6.3L gasoline engine?

Where is location of air conditioning air intake on 2011 Ford F-250 SUPER DUTY 4x4 with 6.3L gasoline engine? - 1

I'd assume it's where pretty much every other manufacturer locates the HVAC intake… At the base of the windshield

It's just below the windshield on the passenger side.

Just about every vehicle I've ever worked on has the air intake at the base of the windshield where the vents louvers are.
The air intake when set to recirculate is under the dash.

1. No 6.3L engine was available in 2011.

2. The HVAC system gets air from the grille at the base of the windshield, it's black and plastic.

Not sure