2025 Westfield ERIS Premium AiR Annexe – Inflatable Extension for Westfield 2.0 Motorhome Awnings

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Original price was: £784.99.Current price is: £449.00.

Brand: WESTFIELD

Expand your Westfield Awning Space. Discover Effortless extension for your existing Westfield 2.0 Awning. Compatible with first and second generation awnings and featuring an array of cleverly designed features, the ERIS Premium Tall Annexe is your perfect companion for all your camping adventure.

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  •  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: Mon, May 04 – Tue, May 05  (Excl Sat, Sun)
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    • Effortless Expansion – Adds extra living, sleeping, or storage space to Westfield awnings
    • Single-Point Inflation – Quick, stable, and stress-free setup
    • Roof Poles Included – Extra support for shape and durability
    • Tinted Windows & Privacy Blinds – Maintain comfort and discretion
    • Fold-Down Side Panels – Increased airflow on warm days
    • Rear Zipped Door – Convenient entry and exit
    • Universal Fit – Compatible with multiple Westfield 2.0 awning models
    • Premium Build Quality – Durable materials for long-lasting use
    • Generous Interior Height – 180 cm standing room for comfort
    • Flexible Partition Options – Double zippers allow room division

    The 2025 ERIS Premium AiR Annexe – The Perfect Extension for your Westfield 2.0 Awning

    Discover Versatile Living Space | Stylish Design | Seamless Integration | Extended Storage | Outdoor Sleeping


    The Westfield Eris Premium Air Annex is the perfect way to extend the space of your Westfield 2.0 awning.

    Westfield Eris Premium Air Annexe Featuring all-round tinted windows with a privacy function The ERIS annexe offers optimal lighting conditions while maintaining comfort and seclusion.

    The unique zipped side windows allow you to fold down the panel, providing additional airflow on warm days —

     A rear zipped door provides easy access, particularly useful when using the annex for storage.

    With a standing height of 180cm, the annex provides plenty of room for comfort and movement. The double zipper design allows you to use the existing awning side panel as a partition or room divider.


    Designed for fast and effortless setup,

    With single inflation point and additional roof poles included, the ERIS provides excellent tension and stability to maintain its shape and durability in various weather conditions.


    Why Choose the Westfield Eris Premium Air Annex? Westfield Pluto Xl with Eris Annexe

    Effortlessly Expands Your Awning Space – More room for comfort and functionality.
    Unique Fold-Down Windows – The only annex with fully openable side panels.

    Built In Door Function – Ideal for additional access.

    Quick & Secure Setup – Roof rails ensure stability in all conditions.
    Premium Build Quality – Durable materials for long-lasting use.
    Universal Fit for Westfield Awnings – Works with both Caravan & Motorhome Awnings.


    Recommended Use: 

    The Westfield Premium Air Annexe is designed to fit 2025 Westfield Air Awnings Range, including:  

    • PLUTO 2.0 / PLUTO XL 2.0
    • VEGA 2.0 W-330 & W-375cm
    • GALAXY 2.0
    • NEPTUNE 2.0
    • ORION 2.0
    • LUNA-PLUS

    The Eris Premium Annexe will also fit the earlier generations of Westfield Awnings, with slight colour difference. 

    Specification Details
    Product Type Inflatable AiR Annexe
    Compatible Awnings Westfield 2.0 Range – Caravan & Motorhome
    Fabric HydroTech Ripstop – durable, weatherproof
    Setup Single-Point Inflation + Roof Poles
    Interior Height 180 cm
    Windows Tinted with zip-up privacy panels
    Doors Rear zip access
    Ventilation Fold-down side panels
    Pack Size Compact for transport & storage
    Warranty Standard Westfield coverage
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    Eris-Premium annexe

    2025 Westfield ERIS Premium AiR Annexe - Inflatable Extension for Westfield 2.0 Motorhome Awnings

    Original price was: £784.99.Current price is: £449.00.

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      Eris-Premium annexe

      2025 Westfield ERIS Premium AiR Annexe - Inflatable Extension for Westfield 2.0 Motorhome Awnings

      Original price was: £784.99.Current price is: £449.00.

      Ask a Question