Upper Air Distribution Box

Upper Air Distribution Box






The upper air distribution box ADB, is fixed to the defrost duct and facia assembly, and seals by contact pressure to the outlet (top) of the air conditioning unit. The ADB incorporates two servo motor operated flaps which regulate airflow to:

Windshield and door drop glass

Fascia center and end of dash (EOD) vents

Air is ducted from the ADB to the fascia air outlet vents. The center vent duct incorporates a baffle plate which balances the volume of airflow between the center and EOD vents.