The Dometic SlideTopper Replacement Cover Assembly is the fabric canopy component that extends and retracts to provide shade and weather protection for your RV's slide-out room. If your SlideTopper cover is torn, faded, or no longer seals properly, this genuine OEM replacement restores full functionality to your awning system. This 90-inch polar white cover is designed to fit standard Dometic SlideTopper mechanisms found on many travel trailers and motorhomes.
Key Features
- Genuine OEM Dometic replacement cover — exact fit for SlideTopper systems
- 90-inch width — fits most standard slide-out applications
- Polar white color — matches original equipment and resists UV fading
- Heavy-duty fabric construction — designed to withstand repeated extension and retraction cycles
- Includes all necessary attachment hardware and fasteners
- Easy installation — replaces worn or damaged covers without system modifications
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 3308340.090B |
| Cover Width | 90 inches |
| Color | Polar White |
| Type | SlideTopper Replacement Cover Assembly |
| Manufacturer | Dometic |
Frequently Asked Questions
Q: How do I know if my SlideTopper cover needs replacement?
A: Replace your cover if you notice tears or punctures in the fabric, permanent wrinkles that won't smooth out when extended, water leaking into the slide-out room, or visible UV damage and fading. A worn cover compromises both weather protection and the appearance of your RV.
Q: Will this 90-inch cover fit my RV's slide-out?
A: The 90-inch measurement refers to the cover width. Verify your current SlideTopper cover width before ordering — measure the fabric span when fully extended. If your slide-out is a different size, contact our team with your RV model and year for the correct part number.
Q: Can I install this cover myself, or do I need professional help?
A: Most RV owners can replace the cover with basic tools and mechanical ability. The assembly includes all fasteners and hardware. Consult your Dometic SlideTopper manual for step-by-step installation instructions, or contact our support team if you need guidance.
Why Choose 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 equipment backed by expert customer support. If you're unsure whether this cover fits your specific RV model, our team is ready to help you identify the exact part you need.
| Brand | Dometic |
|---|---|
| Product type | Slide-out Cover Assembly |
| Part number | 3308340.090B |
| Color | Polar White |
| Size | 90 inch |
| Compatible models | SL3000SL4000 |
| System type | Full Cover SlideTopper |
| Material type | Durable Fabric |
| Features | UV ProtectionWeather Protection |
| Installation | Slide-on replacement (tool-free) |
| Product category | OEM Replacement Part |
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.