2023 Dorema Magnum AirForce All Season Left-Hand AddEx – 270 x 280cm Inflatable Awning Extension

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Original price was: £429.00.Current price is: £325.00.

Brand: DOREMA

The 2023 Dorema Magnum AirForce Left Hand AddEx is a spacious inflatable extension designed to add extra living, storage or sleeping space to your compatible Magnum AirForce All Season porch awning. Measuring 270 x 280cm, it features Dorema’s Easy Air Frame system, a premium TenCate All Season roof and DormaTex side walls.

The all-round covered zip provides a secure connection to the main awning, while a rear window with an internal privacy blind adds everyday comfort. Finished in charcoal and grey, this left-hand extension fits compatible Magnum AirForce 260 and 390 All Season awnings.

Only 2 left in stock

  •  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

    SizeA-Measurement (cm)SizeA-Measurement (cm)
    4725 – 7505750 – 775
    6775 – 8007800 – 825
    8825 – 8509850 – 875
    10875 – 90011900 – 925
    12925 – 95013950 – 975
    14975 – 1000151000 – 1025
    161025 – 1050171050 – 1075
    181075 – 1100191100 – 1125
    201125 – 1150211150 – 1175
    221175 – 1200  
  •  Delivery & Return
    DELIVERY POLICY

    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?

    Put our Highly Rated Customer Service Agents & 100% Customer Satisfaction Guarantee to the test.

    Expert Fitment Advice from Stand Art Service

    Fill in the Quick Contact Form Below or Use our Live Chat Icon on the bottom of the page.

    •  Ask a Question
      Estimated Delivery: Thu, Oct 22 – Fri, Oct 23  (Excl Sat, Sun)
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    • 270 x 280cm Extension: Generous extra space for storage, relaxing or sleeping.
    • Left-Hand Fitting: Designed for the left side of compatible Magnum AirForce awnings.
    • Easy Air Frame: Inflatable framework for convenient pitching.
    • TenCate All Season Roof: Quality coated polyester with a patterned interior.
    • DormaTex Side Walls: Durable TenCate fabric designed for outdoor awning use.
    • All-Round Covered Zip: Neat, sheltered connection to the main awning.
    • Rear Window & Privacy Blind: Natural light with the option of added privacy.
    • Storage Locker Access: Unzippable lower rear panel for convenient access.
    • Optional Inner Tent: Create additional sleeping accommodation.
    • Charcoal & Grey Finish: Matches the Magnum AirForce All Season range.
    • 260 & 390 Compatibility: Designed for both All Season porch awning sizes.

    2023 Dorema Magnum AirForce Left Hand AddEx – More Space for Your Caravan Awning

    Spacious 270 x 280cm Extension • Easy Air Frame • Premium TenCate Fabrics


    Give yourself more room to enjoy your caravan holidays with the 2023 Dorema Magnum AirForce Left Hand AddEx. Designed to extend the left-hand side of your compatible Dorema Magnum AirForce All Season porch awning, this inflatable extension creates a generous additional space for relaxing, storing camping essentials or accommodating overnight guests.

    Whether you’re enjoying a family holiday in the countryside or spending a longer break at your favourite campsite, having extra space makes caravan living more comfortable.

    With its generous 270cm width and 280cm depth, the Magnum AirForce AddEx creates a substantial extension alongside your existing porch awning. It’s a practical way to gain more usable space without replacing the awning you already own.

    Featuring Dorema’s convenient Easy Air Frame (EAF) system, premium TenCate All Season materials and a matching charcoal and grey finish, the AddEx combines comfort, quality and versatility in one well-designed accessory.

    270 x 280cm – A Generous Extension to Your Living Space

    Sometimes your caravan awning needs to do a little more.

    The Magnum AirForce Left-Hand AddEx provides an additional 270 x 280cm floor area, giving you plenty of flexibility when arranging your campsite setup.

    Use it as extra space for camping furniture, luggage and outdoor equipment, or create a separate area for guests with a compatible optional inner tent.

    The additional room helps keep your main porch awning less cluttered, leaving more space for dining, relaxing and enjoying time together.

    When fitted to the Magnum AirForce 260 All Season, the AddEx increases the combined nominal width from 260cm to 530cm.

    Fitted to the larger Magnum AirForce 390 All Season, it increases the combined nominal width from 390cm to 660cm.

    It’s an excellent option for caravanners who enjoy the flexibility of a porch awning but occasionally need the extra room of a much larger setup.


    Easy Air Frame – Convenient Inflatable Pitching

    The Dorema Magnum AirForce AddEx uses the manufacturer’s Easy Air Frame (EAF) system, providing structural support through inflatable air tubes rather than a conventional steel pole framework.

    This makes the extension convenient to pitch alongside your existing inflatable awning.

    The recommended operating pressure is 8–10 PSI, helping the air frame maintain its intended shape and support when correctly inflated.

    The inflatable design is particularly appealing if you already own a Magnum AirForce awning and prefer the convenience of an air-frame setup.

    For longer stays, check the air pressure periodically and adjust it as required, particularly during changes in temperature.

    Premium TenCate All Season Roof and DormaTex Walls

    The 2023 Magnum AirForce All Season AddEx is manufactured using specialist fabrics designed for quality caravan awnings.

    The roof features TenCate All Season coated polyester, with a decorative printed pattern on the inside.

    The walls are made from DormaTex TenCate All Season coated polyester, a material developed specifically for Dorema awnings.

    Together, these fabrics provide durable construction and practical protection against typical British camping weather when the annex is correctly pitched and maintained.

    Finished in an attractive charcoal and grey colour scheme, the AddEx complements the Magnum AirForce All Season range, giving your extended awning a coordinated appearance.


    Designed for the Left-Hand Side of Your Magnum AirForce

    This particular model is the Left-Hand AddEx (LH), specifically designed to attach to the left-hand side of a compatible Magnum AirForce All Season porch awning.

    Unlike a traditional full caravan awning extension, the AddEx is free-standing alongside the porch awning and does not need to be threaded into the caravan’s awning rail.

    Instead, it connects directly to the main awning using an all-round covered zip, creating a neat and sheltered connection.

    The dedicated left-hand design makes it a suitable choice when you want extra living or storage space on that side of your awning.

    Please note: This is the left-hand version and is not interchangeable with the right-hand AddEx.

    Rear Window with Zipped Privacy Blind

    A particularly useful feature of the Magnum AirForce AddEx is its rear window, which includes an internal zipped privacy blind.

    The window allows natural light into the extension, helping the space feel more comfortable and welcoming.

    When you want more privacy, simply close the fitted blind.

    This can be particularly useful when the extension is being used for occasional sleeping accommodation or when your caravan is pitched close to neighbouring campers.

    It’s a thoughtful feature that adds flexibility to how you use the extra space.


    Convenient Access to Caravan Storage Lockers

    The rear panel of the AddEx incorporates a practical feature that caravan owners will appreciate.

    The lower section can be unzipped, allowing access to compatible caravan storage lockers positioned behind the extension.

    This means you may still be able to reach essential equipment or supplies without dismantling the AddEx.

    Access will depend on your caravan’s locker position and the way the extension is fitted.

    For longer holidays, this thoughtful design can make everyday campsite living much more convenient.

    Extra Sleeping Accommodation with an Optional Inner Tent

    Travelling with children, family or overnight guests?

    The Magnum AirForce AddEx can accommodate a compatible Dorema AddEx inner tent, creating an additional sleeping area alongside your main porch awning.

    This offers a practical way to increase your accommodation space while keeping the main awning available for everyday activities.

    The separate compartment can also help create a little more privacy for guests.

    A dedicated left-hand inner tent is available for the left-hand AddEx.


    Extend Your Magnum AirForce Without Replacing It

    One of the main advantages of the Dorema Magnum AirForce range is its adaptable modular design.

    If you already own a compatible Magnum AirForce 260 or 390 All Season porch awning, the AddEx allows you to increase your available space whenever you need it.

    You can use the original porch awning on its own for smaller pitches or shorter breaks, then attach the Left Hand AddEx when additional room would make your holiday more comfortable.

    For even larger arrangements, the Magnum AirForce range also supports a separate Right-Hand AddEx.

    This flexible approach makes the range especially appealing to caravanners who want to adapt their setup to different holidays and campsite requirements.

    Optional Accessories

    The Magnum AirForce Left-Hand AddEx can be complemented by selected Dorema accessories:

    • AddEx Left-Hand Inner Tent: Creates a separate sleeping compartment.
    • AddEx Roof Lining: Provides an additional interior roof layer.
    • Starlux AddEx Carpet: A comfortable finishing touch for the floor area.

    These accessories are sold separately unless specifically included in the advertised package.


    Why Choose the 2023 Dorema Magnum AirForce Left Hand AddEx?

    If your existing Magnum AirForce porch awning is starting to feel a little crowded, the Left-Hand AddEx provides a practical way to create more room.

    Its generous dimensions, convenient inflatable framework and premium TenCate fabrics make it a useful investment for comfortable caravan holidays.

    The covered zip attachment creates a well-integrated extension, while the rear window, fitted privacy blind and convenient lower-panel access add useful everyday functionality.

    Whether you want more storage, extra living space or occasional sleeping accommodation, the Dorema Magnum AirForce Left Hand AddEx helps you get more from your existing caravan awning.

    Buy Your Dorema Magnum AirForce AddEx from StandArt Caravans

    Make your caravan setup more spacious and versatile with the 2023 Dorema Magnum AirForce All Season Left-Hand AddEx.

    At StandArt Caravans, we’re here to help you choose the right accessories for your awning, so you can enjoy a more comfortable holiday setup.

    Add more room for relaxing, storage or overnight guests without replacing your existing Magnum AirForce porch awning.

    Specification Details
    Brand Dorema
    Model Magnum AirForce All Season AddEx
    Model Year 2023
    Product Type Inflatable Porch Awning Extension
    Configuration Left-Hand (LH)
    Dimensions 270 x 280cm
    Frame Easy Air Frame System (EAF)
    Recommended Air Pressure 8–10 PSI
    Roof Material TenCate All Season Coated Polyester
    Wall Material DormaTex TenCate All Season Coated Polyester
    Colour Charcoal / Grey
    Attachment All-Round Covered Zip
    Rear Window With Internal Zipped Privacy Blind
    Rear Access Unzippable Lower Panel
    Compatible Awnings Magnum AirForce 260 & 390 All Season
    Inner Tent Optional – Left-Hand Version
    Roof Lining Optional
    Main Use Extra Living, Storage or Sleeping Space

    1. What is the Dorema Magnum AirForce Left-Hand AddEx?

    The Dorema Magnum AirForce Left-Hand AddEx is an inflatable extension designed to add 270 x 280cm of extra floor space to the left side of a compatible Magnum AirForce All Season porch awning. It can be used for additional living space, storage or sleeping accommodation with an optional inner tent.

    2. What are the dimensions of the 2023 Magnum AirForce AddEx?

    The 2023 Dorema Magnum AirForce All Season AddEx measures 270cm wide by 280cm deep. It is designed to complement both the Magnum AirForce 260 and 390 All Season porch awnings.

    3. Will the Left-Hand AddEx fit the Magnum AirForce 260 and 390?

    Yes. The 2023 All Season Left-Hand AddEx is designed for both the Magnum AirForce 260 All Season and Magnum AirForce 390 All Season porch awnings, provided the attachment system is compatible.

    4. Does the AddEx fit the StarCamp Magnum AirForce KlimaTex awning?

    No. The Magnum AirForce All Season AddEx is not compatible with the StarCamp Magnum AirForce KlimaTex model. These ranges have different attachment arrangements, so the correct version must be selected.

    5. Is the Dorema Magnum AirForce AddEx inflatable?

    Yes. The AddEx uses Dorema’s Easy Air Frame system, with inflatable tubes providing structural support instead of a conventional steel pole frame.

    6. What pressure should I inflate the AddEx to?

    Dorema recommends 8–10 PSI for the Magnum AirForce All Season Easy Air Frame system. Check the pressure regularly and follow the manufacturer’s inflation instructions.

    7. Does the AddEx connect to the caravan’s awning rail?

    No. The AddEx connects directly to the compatible Magnum AirForce porch awning using an all-round covered zip. Dorema specifically states that the extension does not fit into the caravan awning rail.

    8. Can the Left-Hand AddEx be used as an extra bedroom?

    Yes. A compatible Dorema Left-Hand AddEx inner tent can be fitted to create additional sleeping accommodation. The inner tent is an optional accessory.

    9. Does the Magnum AirForce AddEx have a privacy blind?

    Yes. The rear window incorporates an internal zipped privacy blind, allowing natural light into the extension while providing extra privacy when needed.

    10. Can I access my caravan storage locker with the AddEx fitted?

    The lower section of the AddEx rear panel can be unzipped to provide access to compatible caravan storage lockers. Actual access depends on the position of the locker on your caravan.

    11. What fabric is used in the 2023 Magnum AirForce AddEx?

    The All Season AddEx uses TenCate All Season coated polyester for the roof and DormaTex TenCate All Season coated polyester for the walls, matching the main Magnum AirForce All Season awning.

    12. Can I attach an AddEx to both sides of my Magnum AirForce?

    Yes. The Magnum AirForce All Season range supports separate left- and right-hand AddEx extensions. The 260cm awning expands to a combined nominal width of 800cm with both extensions, while the 390cm awning expands to 930cm.

    13. Does the AddEx include an inner tent or carpet?

    The 2023 manufacturer’s catalogue lists the inner tent, roof lining and Starlux AddEx carpet as optional accessories. They should not be assumed to be included with the extension.

    14. Can I use the AddEx without a Magnum AirForce awning?

    No. The AddEx is designed to connect to a compatible Magnum AirForce All Season porch awning. It is not a standalone caravan awning.

    15. What is the difference between the left-hand and right-hand AddEx?

    The left-hand AddEx is configured for fitting to the left side of the main awning, while the right-hand version is configured for the opposite side. They are separate variants and should not be treated as interchangeable.

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    Dorema Magnum AirForce Left Hand AddEx

    2023 Dorema Magnum AirForce All Season Left-Hand AddEx – 270 x 280cm Inflatable Awning Extension

    Original price was: £429.00.Current price is: £325.00.

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      Dorema Magnum AirForce Left Hand AddEx

      2023 Dorema Magnum AirForce All Season Left-Hand AddEx – 270 x 280cm Inflatable Awning Extension

      Original price was: £429.00.Current price is: £325.00.

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