Dometic RV Air Distribution Box | FJXADBMLWHC | Manual Controls

The Dometic FJXADBMLWHC Air Distribution Box (ADB) with Manual Controls is the interior ceiling unit that connects to your rooftop AC — sealing the AC to the roof, dividing intake and discharge airflow, and providing ceiling-mounted controls for easier wiring and access.

Modern Low-Profile Design

• Just 2-3/8" high — leaves more headroom in the cabin
• Redesigned modern look — blends into contemporary RV interiors
• Optimized airflow — increased efficiency and reduced noise
• Two-direction air distribution (front and back)
• Adjustable outlet vent angles for individual fine-tuning

Simple Manual Controls

Two turning knobs set desired temperature and blower speed — no display, no digital menus.

Simple Wiring — 12V Not Required

Only 120V AC power required. No 12V DC circuit needed, simplifying installation.

⚠️ Roof Thickness Note

If your roof thickness is greater than 6", you'll also need Dometic 3101538.001 extension kit (sold separately).

Compatible ACs

• Dometic Brisk Air II: B57915, B59516, B79516
• Dometic Penguin II & Duo-Therm Penguin: 640315, 640316
• FreshJet 3: FJX3473M, FJX3573M, FJXM3573M
• FreshJet 5: FJX5357MHE, FJX5457M, FJX5557M

Dimensions

• Overall: 23" H × 20-1/2" W × 2-3/8" D
• Required Cutout: 14-1/4" × 14-1/4" square

⚠️ Professional Installation Recommended

Involves 120V AC electrical wiring and rooftop AC integration. Installation should be performed by a qualified RV service technician.

Genuine Dometic OEM

Key Features

• Genuine Dometic FJXADBMLWHC ADB with manual controls
• Low-profile 2-3/8" design
• Two-knob manual controls — temperature + blower speed
• 120V AC only — no 12V wiring required
• Two-direction airflow with adjustable vent angles
• Fits standard 14-1/4" × 14-1/4" cutout
• Compatible with Brisk Air II, Penguin II, Duo-Therm Penguin, FreshJet 3, FreshJet 5
• Roofs over 6" thick require Dometic 3101538.001 extension kit

Specifications

• Brand: Dometic
• MPN: FJXADBMLWHC
• SKU: 9930000009
• UPC: 7333497000127
• Type: RV Air Distribution Box (ADB) with Manual Controls
• Controls: Two-knob manual (temperature + blower speed)
• Power: 120V AC only (no 12V required)
• Airflow: Two-direction with adjustable vent angles
• Overall Dimensions: 23" H × 20-1/2" W × 2-3/8" D
• Required Cutout: 14-1/4" × 14-1/4" square
• Compatible ACs (Brisk Air II): B57915, B59516, B79516
• Compatible ACs (Penguin II & Duo-Therm Penguin): 640315, 640316
• Compatible ACs (FreshJet 3): FJX3473M, FJX3573M, FJXM3573M
• Compatible ACs (FreshJet 5): FJX5357MHE, FJX5457M, FJX5557M
• Roof Thickness Note: Roofs over 6" require Dometic 3101538.001 extension