The Dometic roof vent base housing is the foundation of your RV's ventilation system, providing a secure mounting platform for roof vents and fans. If your vent is leaking, cracked, or damaged, replacing the base housing prevents water intrusion and restores proper airflow throughout your RV. This OEM Dometic part fits standard rectangular roof vent openings and is essential for maintaining a dry, comfortable interior.

Key Features

• Genuine OEM Dometic part ensures perfect fit and compatibility
• Dimensions 4.84" x 3.23" fit most standard RV roof vent openings
• Durable plastic construction resists UV damage and weathering
• Includes mounting flange for secure installation to roof membrane
• Compatible with Dometic roof vent fans and dampers
• Prevents water leaks and air infiltration when properly sealed

Technical Specifications

Part Number	9108557531
Manufacturer	Dometic
Opening Dimensions	4.84" x 3.23"
Material	Durable ABS Plastic
Mounting Type	Roof-mounted with flange
Installation	Requires roof sealant/caulk

Frequently Asked Questions

Will this base housing fit my existing vent fan?

This OEM Dometic base housing is designed to work with Dometic roof vent fans and dampers that use the 4.84" x 3.23" opening size. Check your current vent model number to confirm compatibility, or contact our expert support team for verification.

How do I install the roof vent base housing?

The base housing mounts directly to your RV roof with the included flange. You'll need to remove the old housing, clean the roof surface, apply a quality RV roof sealant around the flange, and secure it with the provided fasteners. Proper sealing is critical to prevent water leaks.

What if my vent is leaking—do I need to replace the entire vent?

Not necessarily. If the base housing is cracked or damaged, replacing just the housing often solves the problem. However, if your vent fan motor or damper mechanism is also faulty, you may need additional components. Our support team can help diagnose the issue.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part we sell is genuine OEM Dometic stock, backed by expert support from our team of RV technicians. When you need the exact part to keep your RV running right, Elkhart RV Parts has it in stock and ready to ship.