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Fogatti FADB A1WHL Air Distribution Box Airflow Direction  

Updated 08/26/2026 | Published 08/19/2026

Question:

Does the ADB duct on one side or front and rear?

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Expert Reply:

Hi Roger, the Fogatti Air Distribution Box that comes with part # FG85VR actually does both depending on how the AC is installed. When used in a non-ducted setup, it features front and rear primary distribution vents to blow air evenly throughout the living space. It also includes side-facing adjustable louvers to help fine-tune the direction of the airflow to the sides. In a ducted setup, the ADB directs the air into the left and right ceiling duct runs instead.

So if you’re wondering where the air comes out when there isn’t any ceiling ductwork, it’s primarily front and rear rather than just out of one side. If your RV is ducted, it feeds those side ducts so the cooled air can be distributed throughout the RV.

Are you working with an existing ducted ceiling?

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Heather A

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