F 550 4WD Super Duty V10-6.8L VIN D (2004)
Air Register: Description and Operation
INSTRUMENT PANEL REGISTERS
There are three A/C registers in the cluster opening finish panel and one A/C register in the instrument panel. All A/C register assemblies can be installed
new after removing either the cluster opening finish panel or the instrument panel. New louvers can be installed separately without removing the A/C
register assemblies.