The Dometic Awning Rail (Part# 3308286.120-B) is a genuine OEM replacement rail designed for 16-22 foot Dometic RV awnings in polar white finish. This essential component secures your awning fabric to the RV sidewall and provides the mounting channel for proper awning operation. If your existing rail is damaged, cracked, or showing signs of wear, this direct replacement ensures your awning system functions safely and reliably.

Key Features

• Genuine Dometic OEM Part: Factory-spec replacement rail engineered specifically for Dometic awning systems
• Polar White Finish: Clean, durable white coating matches most RV exteriors and resists UV degradation
• 16-22 Foot Compatibility: Designed for mid to large-size Dometic awning installations
• Aluminum Construction: Lightweight yet strong extruded aluminum withstands weather and road vibration
• Complete Rail Assembly: Ready to install with proper mounting channels for secure fabric attachment
• Weather-Resistant Design: Engineered to handle sun, rain, and temperature extremes without warping or fading

Technical Specifications

Part Number	3308286.120-B
Color	Polar White
Compatible Awning Size	16-22 feet
Material	Extruded Aluminum
Finish Type	Powder-coated
Component Type	Awning Rail Assembly

Frequently Asked Questions

How do I know if this rail fits my Dometic awning?

This rail is designed for Dometic awnings measuring 16-22 feet in length. Check your awning's overall width and verify your existing rail matches the polar white color. If your current rail has the same mounting configuration and your awning falls within this size range, this is the correct replacement.

Can I install this rail myself or do I need a professional?

Installation requires removing the old rail, properly sealing the RV sidewall, and securing the new rail with appropriate fasteners and sealant. While experienced DIYers can handle this job, it involves working at height and ensuring a watertight seal. Many RV owners prefer professional installation to avoid potential leaks.

What causes awning rails to need replacement?

Common causes include impact damage from tree branches or road debris, stress cracks from improper awning tension, UV degradation over time, and corrosion from road salt or coastal environments. If you see cracks, bends, or the rail pulling away from the RV sidewall, replacement is necessary for safe awning operation.

Does this rail come with mounting hardware?

The rail assembly is included, but mounting screws and sealant are typically sold separately as installation requirements vary by RV model and sidewall construction. Use stainless steel fasteners and a high-quality RV lap sealant rated for sidewall applications to ensure a proper, leak-free installation.

Why Buy From Elkhart RV Parts?

We specialize in hard-to-find Dometic RV parts that other suppliers don't stock. Located in Elkhart, Indiana — the RV capital of the world — we have direct access to genuine OEM Dometic components. Every part we sell is authentic, and our team knows these products inside and out. We offer fast shipping across the United States and expert support to help you identify the exact part you need. When you need a Dometic awning rail that fits right the first time, trust the specialists at Elkhart RV Parts.