Where is Cabin Air Filter Located on 2008 Ford super duty?

There isnt a cabin air filter on your 2008 Ford Super Duty model.

NOTE: The air distribution system of this vehicle cannot be equipped with a cabin airfilter.

There are 2 sources of air available to the air distribution system:
Outside air,
Recirculated air,
Air enters the passenger compartment from the following outlets:
Instrument panel registers,
Floor duct,
Rear footwell duct (if equipped),
Windshield defroster nozzle,
Side window demisters,
Passenger compartment air is exhausted from the vehicle through open windows or cab air vents.

This details will help.

Thanks.

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