Dorema Onyx Tall Annex De Luxe XL (250 x 150 cm) – Elegant, Spacious & All-Weather Extension
£709.00
The Dorema Onyx Tall Annex De Luxe XL is a premium-quality awning extension designed to expand your Onyx awning with style and practicality. Crafted from durable, all-weather TenCate coated polyester, it provides a spacious 250 × 150cm interior — ideal for extra sleeping quarters, storage, or a private retreat. Built to match the Onyx Awning’s luxury design, this annex delivers strength, comfort, and long-lasting performance in all seasons.
Available on backorder
Estimated delivery by October 2, 2026- Size Guide
UK Caravan Awning Size Guide – Find the Perfect Fit for Your Full or Porch Awning
Looking for the right size awning for your caravan? Whether you’re after a full awning for extended stays or a porch awning for weekend getaways, our UK Caravan Awning Size Guide makes it easy to find the perfect fit. With over 40 years of combined experience and access to a comprehensive UK caravan database, we take the guesswork out of awning sizing.
In this guide, you’ll learn how to measure your caravan for both full and porch awnings, understand A-measurements, and use our easy-to-read awning size chart. Plus, with our Fitment Guarantee and Free UK Delivery, you can shop with confidence.
📏 Measuring for a Full Caravan Awning
Your caravan’s A-measurement is the key to finding the correct size full awning. This ensures a snug, weatherproof fit that maximises your comfort and space.
🛠️ How To Measure
(Step-by-Step – The Hard Version)- Park your caravan on level ground.
- Thread a string (ideally 10m+) through the entire awning rail from one end to the other.
- Keep your fingers crossed, you measured correctly.
📏 Porch Awnings are more flexible.
However a bit of careful consideration will pay off with a perfect fitting Porch Caravan Awning and years of Hassle Free Camping!
🛠️ How To Measure and What to Look Out For
- Height from ground to awning rail (H)
Typically between 235–250 cm for most UK caravans. - Length of the straight section of the caravan awning rail (L)
- Position of Windows & Doors to ensure good seal and weatherproof camping.
😌 The Easy Way…
Sit back, relax, and let us find your perfect awning!
With access to a huge UK caravan database and over 40 years of combined experience in the trade, we can take the guesswork out of sizing.
All we need is your caravan make, model, and year of manufacture—and we’ll do the rest!
Standard UK Awning Size Chart
Size A-Measurement (cm) Size A-Measurement (cm) 4 725 – 750 5 750 – 775 6 775 – 800 7 800 – 825 8 825 – 850 9 850 – 875 10 875 – 900 11 900 – 925 12 925 – 950 13 950 – 975 14 975 – 1000 15 1000 – 1025 16 1025 – 1050 17 1050 – 1075 18 1075 – 1100 19 1100 – 1125 20 1125 – 1150 21 1150 – 1175 22 1175 – 1200 - Delivery & Return
Same working day dispatch for all orders placed before 1pm.
NEXT WORKING DAY DELIVERY OPTIONS AVAILABLE.
PLEASE NOTE: We do not always have all available sizes and colours of awnings from every supplier available on the shelf.
Depending on stock availability, we may dispatch your order straight from our suppliers warehouse. In such circumstances, a delay of up to 24hours may occur.Fitment Question? Product Enquiry? Delivery Issues?
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- Spacious Interior – 250 × 150 cm, ideal for sleeping or storage
- Weather-Resistant Fabric – Durable TenCate coated polyester for all-season use
- Double-Zip System – Secure and easy attachment of side panels
- Fly Screen Ventilation – Keeps air flowing while preventing insects
- Quick & Simple Setup – Zip-on system with steel frame kit
- Elegant Design – Matches the Dorema Onyx Awning’s aesthetic
- Reliable European Build – High-quality materials and craftsmanship
Dorema Onyx Tall Annex De Luxe XL – Elegant, Spacious & All-Weather Extension
250 × 150cm Layout • Double-Zip System • Fly Screen Ventilation • European Build Quality
Product Description
Enhance your caravan experience with the Dorema Onyx Tall Annex De Luxe XL, a spacious and elegant addition built to withstand the elements. Its double-zip system allows you to easily reattach the side panel, sealing the annex for extra storage or privacy.
The rear doorway and roll-down window with fly screen offer superb airflow and ventilation while keeping insects out — ensuring comfort in every weather condition. Made with Dorema’s trusted European craftsmanship, this annex combines premium materials with clever functionality, perfectly complementing your Dorema Onyx Awning.
Whether used for sleeping, relaxing, or storage, the Onyx Annex De Luxe XL brings flexibility and sophistication to every outdoor setup.
What’s Included
- Dorema Onyx Tall Annex De Luxe XL
- Steel Frame Kit
- Fly Screen Window
- Installation & Setup Guide
Why Choose This Model?
- 🛏️ Adds Valuable Extra Space – Perfect for sleeping or extra gear
- 🌦️ Weather-Resistant Construction – Built from robust, coated polyester
- 🧰 Quick & Easy Setup – Smooth zip system and flexible design
- 🎨 Matches the Dorema Onyx Awning – Consistent look and quality finish
- 💪 Built to Last – European craftsmanship with 2-year warranty
Expand your outdoor comfort with the Dorema Onyx Tall Annex De Luxe XL – a stylish, weatherproof, and spacious extension that transforms your Onyx awning into a true home-from-home.
| Specification | Details |
|---|---|
| Product Type | Caravan Awning Annex Extension |
| Model | Onyx Tall Annex De Luxe XL |
| Compatibility | Dorema Onyx Awning |
| Fabric | TenCate Coated Polyester (Weather-Resistant) |
| Size | 250 × 150 cm |
| Setup | Zip-On with Steel Frame |
| Ventilation | Roll-Down Window with Fly Screen |
| Use | Sleeping, Storage, or Private Retreat |
| Warranty | 2 Years (European Build) |
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